CPU cold plate (copper microchannel/skived)
CPU 液冷板 · Cooling
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.
What Qing asks
One dense message. Five is the whole budget per supplier reply, so the questions that decide comparability go first.
No category-specific question set yet — only the universal commercial terms below.
这批货是全新原封、官翻、拆机件还是工程样片(ES/QS)？请在形式发票上写明状态。如果是拆机件，来源和使用时长是多少？
报价是EXW、FOB还是CIF？指定口岸是哪里？报价里不含哪些费用(出口报关、内陆运输、保险、目的港费用)？
外箱尺寸多少？每箱装几台、毛重多少公斤？每托盘几箱？整单总体积多少立方米？是木托还是纸托、是否需要熏蒸证明？
请给出阶梯报价：1台、10台、50台、100台各是什么价格？每个型号的起订量是多少？价格有效期多久？
出口报关准备用哪个HS编码？报价是含税价还是不含税价？该编码的出口退税率是多少、退税是否已经体现在报价里？
整机原产地写哪里？能否出具原产地证(一般CO还是Form E/RCEP优惠证)？货物是从中国直接出口，还是经香港、新加坡或越南转运？
质保多少个月？DOA(到货即损)申报期限是几天？返修是寄回中国还是有海外备件？是否提供先行换货？返修运费谁承担？
这个托架/导轨/面板是原厂件还是兼容件？上面有没有原厂LOGO或型号标识？能否书面保证不侵犯第三方商标和专利，并承担相关责任？
整机和关键部件(CPU、加速卡、网卡)的原产地分别是哪里？产品里有没有使用美国原产的芯片、软件或技术？大概占多少比例？能不能配合签署最终用户和最终用途声明、承诺不转运？这个型号以前出口过哪些国家？
合同和发票的签约主体全称是什么？统一社会信用代码是多少？工厂是自有还是代工？母公司或控股股东是谁、持股比例多少？有没有国资或上市公司背景？
请提供公司全称、统一社会信用代码和营业执照复印件。贵司是生产工厂、原厂授权代理还是贸易商？如为工厂，工厂地址在哪里、可否安排验厂或视频验厂？开票主体与收款主体是否为同一家公司？
最小起订量是多少？请给出阶梯报价（如100/500/1000/5000片）。报价有效期多少天？NAND和HDD价格波动时如何调价？是否接受锁价？
+ 37 more universal terms
How buyers get burned here
Category-specific, from research rather than generic advice
- Hold-up time simply absent from the quote. CRPS baseline is 12ms at 50% load; a supplier who omits it has usually cut bulk capacitance. Always demand the number plus the load, input voltage, and the scope capture. Two 'identical' 800W CRPS units can differ by 40% in bulk cap cost and only this field exposes it.
- Efficiency quoted at the flattering load point. 'Up to 96%' is always the 50% load figure at 230V. Titanium 230V EU requires 90/93/95/91% at 10/20/50/100% with PF>=0.95, and Titanium is the only tier that even tests the 10% point - which is where a lightly loaded redundant pair actually sits.
- 80 PLUS claimed but not certified. Fake 80 PLUS marks on Chinese-market PSUs are documented. The registry at plugloadsolutions.com is free and public - require the exact searchable model name and report number, and treat 'meets Platinum standard' as uncertified.
- Low-line derating hidden. A '1600W' CRPS may deliver ~1000W at 100-127VAC. Always require the rating at both input windows in writing.
- Fan curves given as max CFM only. Free-air CFM is meaningless inside a 1U at high impedance. Without the full P-Q curve and max static pressure you cannot tell whether the fan moves any air in the actual chassis.
- 'Dual rotor' where only one rotor is driven. Counter-rotating fans command a premium for a reason; confirm both rotors are independently driven with their own PWM and tach signals.
- Fan L10 life quoted at 40C. A 120,000-hour claim at 40C is roughly a quarter of that at 70C. Always require the temperature that goes with the life number.
Generated imagery — illustrative of the category, not a photograph of any supplier, facility or product on this platform.