Equipment catalogue

What Qing knows how to buy — and what it will refuse to

categories
1478
freely routable
1283
no export gate on the item itself
classify before outreach
141
control depends on measured parameters
never routed
42
advanced-computing ECCNs

42 categories are refused at the catalogue, not escalated

A PRC-incorporated entity cannot lawfully be the seller of an advanced-computing item (ECCN 3A090 / 4A090) to any destination worldwide, non-US manufacture does not escape the Foreign Direct Product Rule, and every credible PRC accelerator vendor is Entity Listed. Qing refuses at the catalogue rather than opening a conversation and escalating, because the conversation itself creates a record. See the compliance perimeter →

12 near-duplicate pairs need curating — they are why a matched requirement sometimes comes back ambiguous

The importer collapses pure reorderings and empty qualifiers automatically. It will not decide whether “(x86)” distinguishes a product — that depends on whether an ARM variant exists, and guessing wrong destroys a real distinction. These are left for a human.

  • 1.001U dual-socket rack server (x86)↔2U dual-socket rack server (x86)
  • 1.001U tool-less ball-bearing slide rail kit↔2U tool-less ball-bearing slide rail kit
  • 1.00Active optical cable (AOC), 400G/800G↔Active optical cable (AOC), 400G/800G, 3-30 m
  • 1.00Cable management arm (CMA) 1U/2U↔Cable management arm (CMA)
  • 1.00Enterprise NVMe SSD, U.2/E1.S/E3.S, 3.84-30.72 TB↔Enterprise NVMe SSD, E3.S
  • 1.00Enterprise NVMe SSD, U.2/U.3↔Enterprise NVMe SSD, U.2/E1.S/E3.S, 3.84-30.72 TB
  • 1.00Enterprise NVMe SSD, U.2/U.3↔Enterprise NVMe SSD, E3.S
  • 1.00General-purpose 2U dual-socket rack server↔1U dual-socket rack server
  • 1.00High-capacity QLC NVMe SSD↔E1.L NVMe QLC high-capacity SSD
  • 1.00Type 2 surge protective device↔Surge protective device, Type 1+2 and Type 2
  • 0.88Rear-door heat exchanger, active (fan-assisted)↔Rear-door heat exchanger, active (fan-assisted), 60-100 kW
  • 0.88Single-phase immersion dielectric fluid, synthetic ester base↔Single-phase immersion dielectric fluid (synthetic hydrocarbon / ester)
All 1478Cooling 296Power 270IT hardware 240Facility systems 212White space 198Optics & cabling 111Compute 72Consumables 49Prefabricated 30

Consumables

Each carries the questions that make two quotes comparable, and the traps specific to it

showing 49
  • 400G/800G optical transceiver spare400G/800G 光模块备件
    ConsumablesHS 8517.62contestedper pcCN supply: moderate
    classify first

    Do NOT carry a fabricated AFR. Size spares from the operator's own DDM/flap telemetry.

    7 ways buyers get burned here
    • VERDICT — 3M PFAS exit: CONFIRMED. Press release dated 2022-12-20 commits 3M to discontinue all fluoropolymers, fluorinated fluids and PFAS-based additive products by end-2025; that is the mechanism removing Novec and Fluorinert. The release does not name those brands, so do not quote it as if it does.
    • VERDICT — '3M is now PFAS-free': OVERSTATED. 3M's own FY2025 report says the manufacturing exit completed at end-2025, but ChemSec's analysis of that report counts ~14,000 products still containing PFAS and 139 PFAS types still in use. The exit is of manufacture, not of use.
    • VERDICT — EU universal PFAS restriction is in force: REFUTED. It is a proposal. RAC opinion adopted 2026-03-02; SEAC draft opinion published 2026-03-26 with a 60-day consultation; final SEAC opinion expected end-2026, then Commission legislative decision. Nothing is banned yet.
    • TRAP — PFPE and HFE are themselves PFAS under the ECHA proposal. Selling a Chinese PFPE or HFE as the 'compliant replacement' for Novec into an EU-bound project is a regulatory time bomb, not a solution. Both RAC and SEAC recommended cutting many proposed derogations.
    • VERDICT — 巨化股份 600160 makes electronic fluorinated fluids: CONFIRMED (HFE D-series, PFPE JHT-series). ENTITY TRAP: the 5,000 t/a 巨芯冷却液 PFPE coolant project sits in 浙江创氟高科新材料, controlled by unlisted parent 巨化集团, phase 1 of 1,000 t/a running. Investors have publicly disputed which entity holds the equity and the patents. Confirm the contracting legal entity on the PI, not the ticker.
    • VERDICT — 三美股份 603379 as a coolant/dielectric fluid maker: REFUTED. Its own website lists hydrofluoric acid, refrigerants, blowing agents, etching materials and by-products only. Remove it from the coolant supplier list.
    • VERDICT — 永和股份 605020 as an immersion coolant maker: OVERSTATED. Real line is fluorocarbon chemicals, fluoropolymers (PTFE/FEP/PFA/PVDF) and fluorine fine chemicals including 全氟己酮 (FK-5-1-12) — a fire-suppression agent. Keep it as a fire-agent and fluoropolymer supplier; delete the coolant claim.
  • Bag filter, ISO ePM1 55% (legacy F7), 592x592x600 mm, 6-pocket, synthetic media中效袋式过滤器 F7 / ePM1 55%
    ConsumablesHS 8421.39per pieceCN supply: dominant
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Bag filter, ISO ePM1 80% (legacy F9), 592x592x600 mm, glass-fibre media高中效袋式过滤器 F9 / ePM1 80%
    ConsumablesHS 8421.39per pieceCN supply: strong
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Biodispersant / biofilm penetrant粘泥剥离剂/生物分散剂
    ConsumablesHS 3402.90per litreCN supply: strong
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • CDU spares kit — pump, pump seal, expansion vessel, flow/pressure/conductivity sensors, control boardCDU备件包（泵/机封/膨胀罐/流量压力电导率传感器/控制板）
    ConsumablesHS 8413.91 / 9026.10contestedper kitCN supply: strong
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Chemical dosing pump diaphragm, tubing and valve kit加药泵隔膜/管路/阀维修包
    ConsumablesHS 8413.91per kitCN supply: strong
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Chiller compressor oil, oil filter and filter-drier core set冷水机组压缩机油/油滤/干燥过滤芯
    ConsumablesHS 2710.19 / 8421.99contestedper litre / pieceCN supply: moderate
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Clean-agent suppression cylinder refill (FK-5-1-12 or HFC-227ea) and cylinder hydrostatic test洁净气体灭火剂充装（全氟己酮/七氟丙烷）及气瓶水压试验
    ConsumablesHS 2914.70 / 2903.39 / 8424.10contestedper kg / cylinderCN supply: strong
    classify first

    FK-5-1-12 supply was disrupted by 3M's PFAS exit; Chinese producers now supply the molecule. Refills must be to the suppression system OEM's approval or the system listing lapses — buy the agent where you like, but buy the approval with it.

    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Compact/mini-pleat V-bank filter, ePM1 70-85%, 592x592x292 mmV型组合式中效过滤器
    ConsumablesHS 8421.39per pieceCN supply: strong
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Cooling tower / condenser water scale and corrosion inhibitor (phosphonate + polymer blend)循环水阻垢缓蚀剂（膦酸盐+聚合物）
    ConsumablesHS 3824.99 / 2931.90contestedper kg or litreCN supply: dominant
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Cooling tower PVC film fill pack and drift eliminator冷却塔PVC填料/收水器
    ConsumablesHS 3925.90 / 3920.49contestedper m3 / pieceCN supply: dominant
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Copper/silver reactivity monitoring coupon set, 30/90-day exposure, ISA 71.04腐蚀性气体监测铜银片
    ConsumablesHS 7326.90per setCN supply: moderate
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Corrosion coupon / reactivity monitor kit腐蚀挂片监测套件
    Consumablesper setCN supply: moderate
    unrestricted

    Control status not established per item; treated as ordinary goods because the item class carries no integrated circuit that the .z paragraphs would reach. Verify before a first shipment.

    7 ways buyers get burned here
    • VERDICT — 3M PFAS exit: CONFIRMED. Press release dated 2022-12-20 commits 3M to discontinue all fluoropolymers, fluorinated fluids and PFAS-based additive products by end-2025; that is the mechanism removing Novec and Fluorinert. The release does not name those brands, so do not quote it as if it does.
    • VERDICT — '3M is now PFAS-free': OVERSTATED. 3M's own FY2025 report says the manufacturing exit completed at end-2025, but ChemSec's analysis of that report counts ~14,000 products still containing PFAS and 139 PFAS types still in use. The exit is of manufacture, not of use.
    • VERDICT — EU universal PFAS restriction is in force: REFUTED. It is a proposal. RAC opinion adopted 2026-03-02; SEAC draft opinion published 2026-03-26 with a 60-day consultation; final SEAC opinion expected end-2026, then Commission legislative decision. Nothing is banned yet.
    • TRAP — PFPE and HFE are themselves PFAS under the ECHA proposal. Selling a Chinese PFPE or HFE as the 'compliant replacement' for Novec into an EU-bound project is a regulatory time bomb, not a solution. Both RAC and SEAC recommended cutting many proposed derogations.
    • VERDICT — 巨化股份 600160 makes electronic fluorinated fluids: CONFIRMED (HFE D-series, PFPE JHT-series). ENTITY TRAP: the 5,000 t/a 巨芯冷却液 PFPE coolant project sits in 浙江创氟高科新材料, controlled by unlisted parent 巨化集团, phase 1 of 1,000 t/a running. Investors have publicly disputed which entity holds the equity and the patents. Confirm the contracting legal entity on the PI, not the ticker.
    • VERDICT — 三美股份 603379 as a coolant/dielectric fluid maker: REFUTED. Its own website lists hydrofluoric acid, refrigerants, blowing agents, etching materials and by-products only. Remove it from the coolant supplier list.
    • VERDICT — 永和股份 605020 as an immersion coolant maker: OVERSTATED. Real line is fluorocarbon chemicals, fluoropolymers (PTFE/FEP/PFA/PVDF) and fluorine fine chemicals including 全氟己酮 (FK-5-1-12) — a fire-suppression agent. Keep it as a fire-agent and fluoropolymer supplier; delete the coolant claim.
  • CRAC/CRAH internal filter, MERV 8 / MERV 11 pleated panel, unit-specific size精密空调机组内置过滤网 MERV8/11
    ConsumablesHS 8421.39per pieceCN supply: dominant
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • CRAC/CRAH spares kit — EC fan, control board, humidifier canister, filters, sensors, valve actuator精密空调备件包（风机/主板/加湿罐/滤网/传感器/阀执行器）
    ConsumablesHS 8415.90per kitCN supply: strong
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • CRAH EC plug fan / fan module, 500-900 mm, retrofit精密空调EC离心风机模块
    ConsumablesHS 8414.59per pieceCN supply: moderate
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Diesel fuel polishing filter element and fuel biocide / stabiliser柴油净化滤芯/燃油杀菌剂/稳定剂
    ConsumablesHS 8421.23 / 3808.94 / 3811.90contestedper piece / litreCN supply: strong
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Diesel generator service kit — fuel filters, oil filter, air filter, coolant, lube oil, belts柴油发电机组保养包 燃油/机油/空气滤+冷却液+机油
    ConsumablesHS 8421.23 / 8421.31 / 2710.19 / 3820.00contestedper kitCN supply: strong
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • DIMM / NVMe SSD spares pool内存/固态硬盘备件池
    Consumablesper pcCN supply: strong
    unrestricted

    Control status not established per item; treated as ordinary goods because the item class carries no integrated circuit that the .z paragraphs would reach. Verify before a first shipment.

    7 ways buyers get burned here
    • VERDICT — 3M PFAS exit: CONFIRMED. Press release dated 2022-12-20 commits 3M to discontinue all fluoropolymers, fluorinated fluids and PFAS-based additive products by end-2025; that is the mechanism removing Novec and Fluorinert. The release does not name those brands, so do not quote it as if it does.
    • VERDICT — '3M is now PFAS-free': OVERSTATED. 3M's own FY2025 report says the manufacturing exit completed at end-2025, but ChemSec's analysis of that report counts ~14,000 products still containing PFAS and 139 PFAS types still in use. The exit is of manufacture, not of use.
    • VERDICT — EU universal PFAS restriction is in force: REFUTED. It is a proposal. RAC opinion adopted 2026-03-02; SEAC draft opinion published 2026-03-26 with a 60-day consultation; final SEAC opinion expected end-2026, then Commission legislative decision. Nothing is banned yet.
    • TRAP — PFPE and HFE are themselves PFAS under the ECHA proposal. Selling a Chinese PFPE or HFE as the 'compliant replacement' for Novec into an EU-bound project is a regulatory time bomb, not a solution. Both RAC and SEAC recommended cutting many proposed derogations.
    • VERDICT — 巨化股份 600160 makes electronic fluorinated fluids: CONFIRMED (HFE D-series, PFPE JHT-series). ENTITY TRAP: the 5,000 t/a 巨芯冷却液 PFPE coolant project sits in 浙江创氟高科新材料, controlled by unlisted parent 巨化集团, phase 1 of 1,000 t/a running. Investors have publicly disputed which entity holds the equity and the patents. Confirm the contracting legal entity on the PI, not the ticker.
    • VERDICT — 三美股份 603379 as a coolant/dielectric fluid maker: REFUTED. Its own website lists hydrofluoric acid, refrigerants, blowing agents, etching materials and by-products only. Remove it from the coolant supplier list.
    • VERDICT — 永和股份 605020 as an immersion coolant maker: OVERSTATED. Real line is fluorocarbon chemicals, fluoropolymers (PTFE/FEP/PFA/PVDF) and fluorine fine chemicals including 全氟己酮 (FK-5-1-12) — a fire-suppression agent. Keep it as a fire-agent and fluoropolymer supplier; delete the coolant claim.
  • DOA / advance-replacement spares pool agreementDOA先行更换备件池协议
    Consumablesper per projectCN supply: moderate
    unrestricted
    7 ways buyers get burned here
    • Integration scope left as one word. 'Integrated rack' can mean an upright, cabled, tested rack or a cabinet on a pallet with the servers in cartons beside it. Force a line-by-line yes/no on racking, cabling, labelling, config, firmware alignment and rack-level test, and pin the L-level (L6/L10/L11/L12).
    • Missing rails. Rails are chassis-specific and rack-specific. A quote that lists servers but no rail part number will arrive with no way to mount them. Ask for the rail PN, the post type, the mounting depth range and the load rating, and demand the chassis side-hole drawing.
    • CMA and rail quoted as one item, delivered as one item. Cable management arms are almost never included by default. Same for the adapter bracket needed on round-hole or threaded racks.
    • Rails not rated for loaded shipment. A rail rated 38kg static is not necessarily rated to ship with a server in it. If the rack ships upright, the rail rating and the shipping rating are two different questions.
    • 'Metered PDU' covering four different products. Inlet metering, per-bank metering and per-outlet metering are sold under the same phrase. Without the accuracy class (IEC 62053-21 Class 1 = ±1%) the numbers cannot be used for chargeback.
    • PDU physically will not fit. 0U PDU body length versus the rack's clear internal height, and PDU depth versus cable bend radius behind the servers. Ask for body length in mm, not just '0U'.
    • Wrong input plug for the destination. Chinese factories default to CN or generic plugs. The input plug standard, cord length and the destination's certification (UL vs CE vs CCC) must be stated per shipment.
  • ESD wrist strap, heel strap, bench mat and ground cord set防静电手环/脚跟带/台垫/接地线
    ConsumablesHS 8536.90 / 4016.91contestedper piece / setCN supply: dominant
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Evaporative cooling pad, cellulose 7090, 150 mm depth, cut to size湿膜/蒸发冷却填料 7090
    ConsumablesHS 4823.90per m2CN supply: dominant
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Fibre end-face cleaning consumables光纤端面清洁耗材
    Consumablesper pc / boxCN supply: moderate
    unrestricted

    Control status not established per item; treated as ordinary goods because the item class carries no integrated circuit that the .z paragraphs would reach. Verify before a first shipment.

    7 ways buyers get burned here
    • VERDICT — 3M PFAS exit: CONFIRMED. Press release dated 2022-12-20 commits 3M to discontinue all fluoropolymers, fluorinated fluids and PFAS-based additive products by end-2025; that is the mechanism removing Novec and Fluorinert. The release does not name those brands, so do not quote it as if it does.
    • VERDICT — '3M is now PFAS-free': OVERSTATED. 3M's own FY2025 report says the manufacturing exit completed at end-2025, but ChemSec's analysis of that report counts ~14,000 products still containing PFAS and 139 PFAS types still in use. The exit is of manufacture, not of use.
    • VERDICT — EU universal PFAS restriction is in force: REFUTED. It is a proposal. RAC opinion adopted 2026-03-02; SEAC draft opinion published 2026-03-26 with a 60-day consultation; final SEAC opinion expected end-2026, then Commission legislative decision. Nothing is banned yet.
    • TRAP — PFPE and HFE are themselves PFAS under the ECHA proposal. Selling a Chinese PFPE or HFE as the 'compliant replacement' for Novec into an EU-bound project is a regulatory time bomb, not a solution. Both RAC and SEAC recommended cutting many proposed derogations.
    • VERDICT — 巨化股份 600160 makes electronic fluorinated fluids: CONFIRMED (HFE D-series, PFPE JHT-series). ENTITY TRAP: the 5,000 t/a 巨芯冷却液 PFPE coolant project sits in 浙江创氟高科新材料, controlled by unlisted parent 巨化集团, phase 1 of 1,000 t/a running. Investors have publicly disputed which entity holds the equity and the patents. Confirm the contracting legal entity on the PI, not the ticker.
    • VERDICT — 三美股份 603379 as a coolant/dielectric fluid maker: REFUTED. Its own website lists hydrofluoric acid, refrigerants, blowing agents, etching materials and by-products only. Remove it from the coolant supplier list.
    • VERDICT — 永和股份 605020 as an immersion coolant maker: OVERSTATED. Real line is fluorocarbon chemicals, fluoropolymers (PTFE/FEP/PFA/PVDF) and fluorine fine chemicals including 全氟己酮 (FK-5-1-12) — a fire-suppression agent. Keep it as a fire-agent and fluoropolymer supplier; delete the coolant claim.
  • Fibre patch cord MPO-12/LC duplexMPO/LC 光纤跳线
    Consumablesper pcCN supply: moderate
    unrestricted

    Control status not established per item; treated as ordinary goods because the item class carries no integrated circuit that the .z paragraphs would reach. Verify before a first shipment.

    7 ways buyers get burned here
    • VERDICT — 3M PFAS exit: CONFIRMED. Press release dated 2022-12-20 commits 3M to discontinue all fluoropolymers, fluorinated fluids and PFAS-based additive products by end-2025; that is the mechanism removing Novec and Fluorinert. The release does not name those brands, so do not quote it as if it does.
    • VERDICT — '3M is now PFAS-free': OVERSTATED. 3M's own FY2025 report says the manufacturing exit completed at end-2025, but ChemSec's analysis of that report counts ~14,000 products still containing PFAS and 139 PFAS types still in use. The exit is of manufacture, not of use.
    • VERDICT — EU universal PFAS restriction is in force: REFUTED. It is a proposal. RAC opinion adopted 2026-03-02; SEAC draft opinion published 2026-03-26 with a 60-day consultation; final SEAC opinion expected end-2026, then Commission legislative decision. Nothing is banned yet.
    • TRAP — PFPE and HFE are themselves PFAS under the ECHA proposal. Selling a Chinese PFPE or HFE as the 'compliant replacement' for Novec into an EU-bound project is a regulatory time bomb, not a solution. Both RAC and SEAC recommended cutting many proposed derogations.
    • VERDICT — 巨化股份 600160 makes electronic fluorinated fluids: CONFIRMED (HFE D-series, PFPE JHT-series). ENTITY TRAP: the 5,000 t/a 巨芯冷却液 PFPE coolant project sits in 浙江创氟高科新材料, controlled by unlisted parent 巨化集团, phase 1 of 1,000 t/a running. Investors have publicly disputed which entity holds the equity and the patents. Confirm the contracting legal entity on the PI, not the ticker.
    • VERDICT — 三美股份 603379 as a coolant/dielectric fluid maker: REFUTED. Its own website lists hydrofluoric acid, refrigerants, blowing agents, etching materials and by-products only. Remove it from the coolant supplier list.
    • VERDICT — 永和股份 605020 as an immersion coolant maker: OVERSTATED. Real line is fluorocarbon chemicals, fluoropolymers (PTFE/FEP/PFA/PVDF) and fluorine fine chemicals including 全氟己酮 (FK-5-1-12) — a fire-suppression agent. Keep it as a fire-agent and fluoropolymer supplier; delete the coolant claim.
  • Filter media roll, synthetic G3/G4, 2 m x 20 m, for AHU and IEC units过滤棉卷材 G4
    ConsumablesHS 5911.40 / 8421.39contestedper rollCN supply: dominant
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Gas-phase chemical filter module, activated carbon + potassium permanganate blended media, ISA 71.04 G2/G3 duty化学过滤器 活性炭+高锰酸钾复合
    ConsumablesHS 3802.10 / 8421.39contestedper module or kgCN supply: strong
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Genset starting battery (VRLA or lithium) and jacket water heater element发电机启动电池/缸套水加热器
    ConsumablesHS 8507.10 / 8516.80contestedper pieceCN supply: dominant
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • HEPA filter H13/H14, 610x610x69 mm, gel-seal, for FFU / containment高效过滤器 H13/H14 无隔板
    ConsumablesHS 8421.39per pieceCN supply: dominant
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Legionella dip slides, ATP test kits and corrosion coupons (mild steel / admiralty brass)军团菌测试片/ATP检测/腐蚀挂片
    ConsumablesHS 3822.00 / 7326.90contestedper setCN supply: moderate
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Lint-free wipes, tacky mats, anti-static floor cleaner and HEPA vacuum filters无尘布/粘尘垫/防静电地板清洁剂/吸尘器HEPA滤芯
    ConsumablesHS 5603.92 / 3402.90 / 8421.99contestedper pack / caseCN supply: dominant
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Lithium coin cell / RAID supercap spares with UN38.3 documentation纽扣电池/RAID超级电容备件（含UN38.3报告）
    ConsumablesHS 8506.50per pcCN supply: moderate
    unrestricted
    7 ways buyers get burned here
    • Integration scope left as one word. 'Integrated rack' can mean an upright, cabled, tested rack or a cabinet on a pallet with the servers in cartons beside it. Force a line-by-line yes/no on racking, cabling, labelling, config, firmware alignment and rack-level test, and pin the L-level (L6/L10/L11/L12).
    • Missing rails. Rails are chassis-specific and rack-specific. A quote that lists servers but no rail part number will arrive with no way to mount them. Ask for the rail PN, the post type, the mounting depth range and the load rating, and demand the chassis side-hole drawing.
    • CMA and rail quoted as one item, delivered as one item. Cable management arms are almost never included by default. Same for the adapter bracket needed on round-hole or threaded racks.
    • Rails not rated for loaded shipment. A rail rated 38kg static is not necessarily rated to ship with a server in it. If the rack ships upright, the rail rating and the shipping rating are two different questions.
    • 'Metered PDU' covering four different products. Inlet metering, per-bank metering and per-outlet metering are sold under the same phrase. Without the accuracy class (IEC 62053-21 Class 1 = ±1%) the numbers cannot be used for chargeback.
    • PDU physically will not fit. 0U PDU body length versus the rack's clear internal height, and PDU depth versus cable bend radius behind the servers. Ask for body length in mm, not just '0U'.
    • Wrong input plug for the destination. Chinese factories default to CN or generic plugs. The input plug standard, cord length and the destination's certification (UL vs CE vs CCC) must be stated per shipment.
  • Non-oxidising biocide for open tower — DBNPA / glutaraldehyde / isothiazolinone非氧化性杀菌剂 DBNPA/戊二醛/异噻唑啉酮
    ConsumablesHS 3808.94per litreCN supply: strong
    classify first

    Registration, not manufacture, is the gating constraint. Legionella control liability makes this a programme purchase.

    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Optical module advance-replacement / spares pool agreement光模块备件池/先行更换协议
    Consumablesper contractCN supply: dominant
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Oxidising biocide — sodium hypochlorite or BCDMH bromine tablets氧化性杀菌剂 次氯酸钠/溴片
    ConsumablesHS 2828.90 / 2933.69contestedper kgCN supply: dominant
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Panel prefilter, ISO Coarse 60-65% (legacy G4), 592x592x48 mm, galvanised frame, synthetic media初效板式过滤器 G4 592x592x48
    ConsumablesHS 8421.39per pieceCN supply: dominant
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Rail and rack-hardware spares kit导轨及机柜五金备件包
    ConsumablesHS 8473.30per kitCN supply: strong
    unrestricted
    7 ways buyers get burned here
    • Integration scope left as one word. 'Integrated rack' can mean an upright, cabled, tested rack or a cabinet on a pallet with the servers in cartons beside it. Force a line-by-line yes/no on racking, cabling, labelling, config, firmware alignment and rack-level test, and pin the L-level (L6/L10/L11/L12).
    • Missing rails. Rails are chassis-specific and rack-specific. A quote that lists servers but no rail part number will arrive with no way to mount them. Ask for the rail PN, the post type, the mounting depth range and the load rating, and demand the chassis side-hole drawing.
    • CMA and rail quoted as one item, delivered as one item. Cable management arms are almost never included by default. Same for the adapter bracket needed on round-hole or threaded racks.
    • Rails not rated for loaded shipment. A rail rated 38kg static is not necessarily rated to ship with a server in it. If the rack ships upright, the rail rating and the shipping rating are two different questions.
    • 'Metered PDU' covering four different products. Inlet metering, per-bank metering and per-outlet metering are sold under the same phrase. Without the accuracy class (IEC 62053-21 Class 1 = ±1%) the numbers cannot be used for chargeback.
    • PDU physically will not fit. 0U PDU body length versus the rack's clear internal height, and PDU depth versus cable bend radius behind the servers. Ask for body length in mm, not just '0U'.
    • Wrong input plug for the destination. Chinese factories default to CN or generic plugs. The input plug standard, cord length and the destination's certification (UL vs CE vs CCC) must be stated per shipment.
  • Raised floor tile and anti-static finish防静电地板砖及打蜡耗材
    Consumablesper pc / LCN supply: moderate
    unrestricted

    Control status not established per item; treated as ordinary goods because the item class carries no integrated circuit that the .z paragraphs would reach. Verify before a first shipment.

    7 ways buyers get burned here
    • VERDICT — 3M PFAS exit: CONFIRMED. Press release dated 2022-12-20 commits 3M to discontinue all fluoropolymers, fluorinated fluids and PFAS-based additive products by end-2025; that is the mechanism removing Novec and Fluorinert. The release does not name those brands, so do not quote it as if it does.
    • VERDICT — '3M is now PFAS-free': OVERSTATED. 3M's own FY2025 report says the manufacturing exit completed at end-2025, but ChemSec's analysis of that report counts ~14,000 products still containing PFAS and 139 PFAS types still in use. The exit is of manufacture, not of use.
    • VERDICT — EU universal PFAS restriction is in force: REFUTED. It is a proposal. RAC opinion adopted 2026-03-02; SEAC draft opinion published 2026-03-26 with a 60-day consultation; final SEAC opinion expected end-2026, then Commission legislative decision. Nothing is banned yet.
    • TRAP — PFPE and HFE are themselves PFAS under the ECHA proposal. Selling a Chinese PFPE or HFE as the 'compliant replacement' for Novec into an EU-bound project is a regulatory time bomb, not a solution. Both RAC and SEAC recommended cutting many proposed derogations.
    • VERDICT — 巨化股份 600160 makes electronic fluorinated fluids: CONFIRMED (HFE D-series, PFPE JHT-series). ENTITY TRAP: the 5,000 t/a 巨芯冷却液 PFPE coolant project sits in 浙江创氟高科新材料, controlled by unlisted parent 巨化集团, phase 1 of 1,000 t/a running. Investors have publicly disputed which entity holds the equity and the patents. Confirm the contracting legal entity on the PI, not the ticker.
    • VERDICT — 三美股份 603379 as a coolant/dielectric fluid maker: REFUTED. Its own website lists hydrofluoric acid, refrigerants, blowing agents, etching materials and by-products only. Remove it from the coolant supplier list.
    • VERDICT — 永和股份 605020 as an immersion coolant maker: OVERSTATED. Real line is fluorocarbon chemicals, fluoropolymers (PTFE/FEP/PFA/PVDF) and fluorine fine chemicals including 全氟己酮 (FK-5-1-12) — a fire-suppression agent. Keep it as a fire-agent and fluoropolymer supplier; delete the coolant claim.
  • Refrigerant leak detection sensor cell (IR / semiconductor), plant room制冷剂泄漏探测器传感器
    ConsumablesHS 9027.10per pieceCN supply: moderate
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Refrigerant top-up — R134a / R513A / R1234ze / R32制冷剂补充 R134a/R513A/R1234ze/R32
    ConsumablesHS 2903.39 / 3827contestedper kgCN supply: dominant
    PRC licence

    Requires a PRC dual-use export licence held by the supplier (两用物项出口管制条例, in force 2024-12-01).

    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • RO antiscalant, cartridge prefilters (5 um), softener salt反渗透阻垢剂/保安滤芯/软化盐
    ConsumablesHS 3824.99 / 8421.99 / 2501.00contestedper litre / piece / tCN supply: dominant
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • RO membrane element, 8040 brackish water, for makeup/humidifier water反渗透膜元件 8040
    ConsumablesHS 8421.21 / 8421.99contestedper pieceCN supply: dominant
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Server chassis fan, 40 mm / 60 mm / 80 mm dual-rotor high static pressure, 12V/48V PWM服务器散热风扇 40/60/80mm 双转子
    ConsumablesHS 8414.59per pieceCN supply: strong
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • Server fan module服务器风扇模组
    Consumablesper pcCN supply: moderate
    unrestricted

    Control status not established per item; treated as ordinary goods because the item class carries no integrated circuit that the .z paragraphs would reach. Verify before a first shipment.

    7 ways buyers get burned here
    • VERDICT — 3M PFAS exit: CONFIRMED. Press release dated 2022-12-20 commits 3M to discontinue all fluoropolymers, fluorinated fluids and PFAS-based additive products by end-2025; that is the mechanism removing Novec and Fluorinert. The release does not name those brands, so do not quote it as if it does.
    • VERDICT — '3M is now PFAS-free': OVERSTATED. 3M's own FY2025 report says the manufacturing exit completed at end-2025, but ChemSec's analysis of that report counts ~14,000 products still containing PFAS and 139 PFAS types still in use. The exit is of manufacture, not of use.
    • VERDICT — EU universal PFAS restriction is in force: REFUTED. It is a proposal. RAC opinion adopted 2026-03-02; SEAC draft opinion published 2026-03-26 with a 60-day consultation; final SEAC opinion expected end-2026, then Commission legislative decision. Nothing is banned yet.
    • TRAP — PFPE and HFE are themselves PFAS under the ECHA proposal. Selling a Chinese PFPE or HFE as the 'compliant replacement' for Novec into an EU-bound project is a regulatory time bomb, not a solution. Both RAC and SEAC recommended cutting many proposed derogations.
    • VERDICT — 巨化股份 600160 makes electronic fluorinated fluids: CONFIRMED (HFE D-series, PFPE JHT-series). ENTITY TRAP: the 5,000 t/a 巨芯冷却液 PFPE coolant project sits in 浙江创氟高科新材料, controlled by unlisted parent 巨化集团, phase 1 of 1,000 t/a running. Investors have publicly disputed which entity holds the equity and the patents. Confirm the contracting legal entity on the PI, not the ticker.
    • VERDICT — 三美股份 603379 as a coolant/dielectric fluid maker: REFUTED. Its own website lists hydrofluoric acid, refrigerants, blowing agents, etching materials and by-products only. Remove it from the coolant supplier list.
    • VERDICT — 永和股份 605020 as an immersion coolant maker: OVERSTATED. Real line is fluorocarbon chemicals, fluoropolymers (PTFE/FEP/PFA/PVDF) and fluorine fine chemicals including 全氟己酮 (FK-5-1-12) — a fire-suppression agent. Keep it as a fire-agent and fluoropolymer supplier; delete the coolant claim.
  • Server PSU spare服务器电源模块
    Consumablesper pcCN supply: moderate
    unrestricted

    Control status not established per item; treated as ordinary goods because the item class carries no integrated circuit that the .z paragraphs would reach. Verify before a first shipment.

    7 ways buyers get burned here
    • VERDICT — 3M PFAS exit: CONFIRMED. Press release dated 2022-12-20 commits 3M to discontinue all fluoropolymers, fluorinated fluids and PFAS-based additive products by end-2025; that is the mechanism removing Novec and Fluorinert. The release does not name those brands, so do not quote it as if it does.
    • VERDICT — '3M is now PFAS-free': OVERSTATED. 3M's own FY2025 report says the manufacturing exit completed at end-2025, but ChemSec's analysis of that report counts ~14,000 products still containing PFAS and 139 PFAS types still in use. The exit is of manufacture, not of use.
    • VERDICT — EU universal PFAS restriction is in force: REFUTED. It is a proposal. RAC opinion adopted 2026-03-02; SEAC draft opinion published 2026-03-26 with a 60-day consultation; final SEAC opinion expected end-2026, then Commission legislative decision. Nothing is banned yet.
    • TRAP — PFPE and HFE are themselves PFAS under the ECHA proposal. Selling a Chinese PFPE or HFE as the 'compliant replacement' for Novec into an EU-bound project is a regulatory time bomb, not a solution. Both RAC and SEAC recommended cutting many proposed derogations.
    • VERDICT — 巨化股份 600160 makes electronic fluorinated fluids: CONFIRMED (HFE D-series, PFPE JHT-series). ENTITY TRAP: the 5,000 t/a 巨芯冷却液 PFPE coolant project sits in 浙江创氟高科新材料, controlled by unlisted parent 巨化集团, phase 1 of 1,000 t/a running. Investors have publicly disputed which entity holds the equity and the patents. Confirm the contracting legal entity on the PI, not the ticker.
    • VERDICT — 三美股份 603379 as a coolant/dielectric fluid maker: REFUTED. Its own website lists hydrofluoric acid, refrigerants, blowing agents, etching materials and by-products only. Remove it from the coolant supplier list.
    • VERDICT — 永和股份 605020 as an immersion coolant maker: OVERSTATED. Real line is fluorocarbon chemicals, fluoropolymers (PTFE/FEP/PFA/PVDF) and fluorine fine chemicals including 全氟己酮 (FK-5-1-12) — a fire-suppression agent. Keep it as a fire-agent and fluoropolymer supplier; delete the coolant claim.
  • Spare parts kit (fans, PSU, caddies, rails)服务器备件包
    ConsumablesHS 8473.30per kitCN supply: moderate
    unrestricted
    7 ways buyers get burned here
    • 'OEM' means the opposite of what you think. A Chinese seller saying OEM almost always means 代工/贴牌 — they will build or relabel to your spec, with no brand IP behind it. A Western buyer hears 'made by Dell/HPE'. Never accept the word; ask which factory designed the board and which built it, and get FCC ID / CMIIT ID and PCB silkscreen photos.
    • Engineering samples sold as production silicon. ES/QS CPUs are typically 30-50% below retail, carry no vendor warranty, and can be unstable in specific workloads. Intel states the S-spec is printed only on the IHS, that 'Intel Confidential' or a missing brand string identifies an ES, and that it may retain or destroy re-marked product. QS is nearer retail but is still a sample. Demand IHS photos and an ES/QS exclusion clause with lot-level return.
    • 拆机件 sold as new. Decommissioned DDR4 RDIMMs, RAID cards and drives are a huge, largely legitimate market — the fraud is the relabelling. Refurbishers are documented as resurfacing bad sectors, zeroing power-on hours and swapping model labels. Require original sealed packaging, single-lot date codes, and per-unit health logs.
    • SMART is not proof of a new drive. Commercial tools reset SMART attributes to factory defaults in one click. On Seagate drives the FARM log is a second, harder-to-scrub record: FARM hours exceeding SMART hours indicates tampering. On SSDs, firmware can misreport capacity and health outright, so a clean SMART page means very little.
    • Altered labels defeat verification portals. Scammers copy serials from newer drives onto old units and reprint QR codes so that vendor verification appears to pass. Verify serials yourself at the OEM portal (verify.seagate.com, cway.cisco.com/sncheck, Intel's FPO/ATPO lookup), and cross-check that the serial's warranty start date is consistent with a genuinely new unit.
    • Remarked memory. A DDR5-4800 module relabelled as 6400, or SK hynix dies under a Samsung label, is caught only by comparing three layers: printed module label, SPD dump, and the die markings on the chips themselves. Any disagreement across those three is disqualifying.
    • Vendor-locked parts that boot nowhere. AMD PSB-locked EPYCs, crossflashed RAID cards and OEM-keyed drives are common in pulled stock and are functionally worthless outside their original platform. Ask about lock status explicitly; a seller who does not understand the question is a reseller, not a builder.
  • Spares kit (FRU set)备件包
    Consumablesper kitCN supply: strong
    unrestricted
    7 ways buyers get burned here
    • Integration scope left as one word. 'Integrated rack' can mean an upright, cabled, tested rack or a cabinet on a pallet with the servers in cartons beside it. Force a line-by-line yes/no on racking, cabling, labelling, config, firmware alignment and rack-level test, and pin the L-level (L6/L10/L11/L12).
    • Missing rails. Rails are chassis-specific and rack-specific. A quote that lists servers but no rail part number will arrive with no way to mount them. Ask for the rail PN, the post type, the mounting depth range and the load rating, and demand the chassis side-hole drawing.
    • CMA and rail quoted as one item, delivered as one item. Cable management arms are almost never included by default. Same for the adapter bracket needed on round-hole or threaded racks.
    • Rails not rated for loaded shipment. A rail rated 38kg static is not necessarily rated to ship with a server in it. If the rack ships upright, the rail rating and the shipping rating are two different questions.
    • 'Metered PDU' covering four different products. Inlet metering, per-bank metering and per-outlet metering are sold under the same phrase. Without the accuracy class (IEC 62053-21 Class 1 = ±1%) the numbers cannot be used for chargeback.
    • PDU physically will not fit. 0U PDU body length versus the rack's clear internal height, and PDU depth versus cable bend radius behind the servers. Ask for body length in mm, not just '0U'.
    • Wrong input plug for the destination. Chinese factories default to CN or generic plugs. The input plug standard, cord length and the destination's certification (UL vs CE vs CCC) must be stated per shipment.
  • Thermal interface material (cold plate)导热界面材料
    Consumablesper g / syringe / sheetCN supply: strong
    unrestricted

    Control status not established per item; treated as ordinary goods because the item class carries no integrated circuit that the .z paragraphs would reach. Verify before a first shipment.

    7 ways buyers get burned here
    • VERDICT — 3M PFAS exit: CONFIRMED. Press release dated 2022-12-20 commits 3M to discontinue all fluoropolymers, fluorinated fluids and PFAS-based additive products by end-2025; that is the mechanism removing Novec and Fluorinert. The release does not name those brands, so do not quote it as if it does.
    • VERDICT — '3M is now PFAS-free': OVERSTATED. 3M's own FY2025 report says the manufacturing exit completed at end-2025, but ChemSec's analysis of that report counts ~14,000 products still containing PFAS and 139 PFAS types still in use. The exit is of manufacture, not of use.
    • VERDICT — EU universal PFAS restriction is in force: REFUTED. It is a proposal. RAC opinion adopted 2026-03-02; SEAC draft opinion published 2026-03-26 with a 60-day consultation; final SEAC opinion expected end-2026, then Commission legislative decision. Nothing is banned yet.
    • TRAP — PFPE and HFE are themselves PFAS under the ECHA proposal. Selling a Chinese PFPE or HFE as the 'compliant replacement' for Novec into an EU-bound project is a regulatory time bomb, not a solution. Both RAC and SEAC recommended cutting many proposed derogations.
    • VERDICT — 巨化股份 600160 makes electronic fluorinated fluids: CONFIRMED (HFE D-series, PFPE JHT-series). ENTITY TRAP: the 5,000 t/a 巨芯冷却液 PFPE coolant project sits in 浙江创氟高科新材料, controlled by unlisted parent 巨化集团, phase 1 of 1,000 t/a running. Investors have publicly disputed which entity holds the equity and the patents. Confirm the contracting legal entity on the PI, not the ticker.
    • VERDICT — 三美股份 603379 as a coolant/dielectric fluid maker: REFUTED. Its own website lists hydrofluoric acid, refrigerants, blowing agents, etching materials and by-products only. Remove it from the coolant supplier list.
    • VERDICT — 永和股份 605020 as an immersion coolant maker: OVERSTATED. Real line is fluorocarbon chemicals, fluoropolymers (PTFE/FEP/PFA/PVDF) and fluorine fine chemicals including 全氟己酮 (FK-5-1-12) — a fire-suppression agent. Keep it as a fire-agent and fluoropolymer supplier; delete the coolant claim.
  • Thermal-transfer label stock and printer ribbon (cable, port, asset and rack labels)热转印标签纸/色带（线缆/端口/资产）
    ConsumablesHS 4821.90 / 9612.10contestedper rollCN supply: strong
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
  • VESDA / aspirating smoke detector filter cartridge and sampling pipe fittings极早期烟雾探测器滤芯/采样管件
    ConsumablesHS 8421.99 / 3917.23contestedper pieceCN supply: moderate
    unrestricted
    7 ways buyers get burned here
    • Filter class fraud: media sold as ePM1 55% (F7) that tests at coarse-filter performance. Demand the ISO 16890 report number, the accredited laboratory and the report date, and spot-test media from the delivered lot — not from the sample.
    • Nominal versus actual filter dimensions: a filter quoted as 600x600 that measures 592x592 against a frame expecting 595x595 leaks unfiltered air around the element and voids the rated efficiency entirely. Always specify actual mm and tolerance.
    • Buying filters on unit price instead of Eurovent energy class: a filter 30 Pa higher in initial pressure drop can cost more in fan energy over one service life than the entire unit price difference. Compare kWh/yr at 0.944 m3/s, then price.
    • PTM7950 and high-end TIM counterfeits: this is the single most counterfeited item in the data-centre consumable catalogue. Relabelled generic phase-change film is endemic on Chinese marketplaces. Buy only via authorised distribution with lot traceability, and verify storage conditions in transit.
    • Coolant supplied as industrial glycol cut with tap water rather than certified DI water, with no inhibitor package. Conductivity on arrival is the tell — test every drum against a stated uS/cm limit and reject on the number, not on the label.
    • Automotive or HVAC inhibited coolant sold as data-centre coolant: silicates and borates drop out and foul cold-plate microchannels months later. Require a written silicate-free, borate-free, nitrite-free, amine-free declaration.
    • Fitting a mixed-bed DI polishing cartridge to an inhibited PG25 loop: the resin strips the inhibitor package out of the fluid and corrosion begins silently. Common and expensive design error, usually made by whoever specified the CDU rather than the fluid.
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