Warranty, Grading and Returns

The grading system

Every item we sell carries one of these grades, and the grade appears on the product page and on the packing list.

Brand New Pulled (NEW_PULLED). Zero power-on hours, pulled from a decommissioned production server or storage appliance. Never powered on. Zero reallocated sectors. Full rated capacity. SMART health reads 100% (or 92-100% where the platform reports a coarse figure).

These units are commonly described in the trade as "0通电" — zero power-on. The Chinese term is 全新拆机, meaning "brand new, pulled from machine". The English term we use is Brand New Pulled.

What this is not: factory sealed. A pulled drive was installed in a server, so the OEM tamper seal is broken. We re-seal in our own anti-static packaging for transport. We will not describe a pulled drive as new-in-box, because that would put a warranty claim on us that we could not honour.

Factory Sealed (NEW_SEALED). Unopened, never installed. Genuinely rare in this trade and priced accordingly. We list it separately and only when we have verified it.

Refurbished (REFURBISHED). Fully torn down, tested and reassembled. Wear components replaced, firmware updated, diagnostics passed. Typically servers, switches and arrays.

Used — Grade A / B / C (USED_A / USED_B / USED_C). Light to heavy wear. Always fully functional and tested; the grade describes appearance and hours, not reliability. Power-on hours and health score are published per unit.

For Parts (FOR_PARTS). Not functional. Sold for donor boards, head stacks, fans and power supplies. No functional warranty, no returns.

What the warranty covers

Warranty length is stated per product: 0, 3, 6 or 12 months.

Typical terms:

• 12 months: zero-hour pulled drives and flash, and most high-value array systems
• 6 months: refurbished servers, switches, routers and firewalls
• 3 months: legacy components, used components, workstations, older platforms
• 0 months: For Parts stock

Covered: the unit fails for a manufacturing, component or internal-wiring reason within the warranty period from delivery.

Not covered: physical or mechanical damage; liquid ingress; damage from an unstable mains supply or a missing earth; unauthorised disassembly or modification; use outside the manufacturer's environmental specification; and consumables such as batteries in cached RAID controllers.

Warranty types

Parts & Labour — we supply a replacement part or unit under the same warranty terms as the original.

Advance Replacement — we ship a replacement before receiving the failed unit. Available on most server and switch listings. There is no charge, but the failed unit must be returned within 14 days of our dispatch or the replacement becomes chargeable.

If something fails

1. Contact us within 7 days of delivery on +86 13535548095 or leviyang@renfengtech.com.

2. We troubleshoot remotely first. The majority of apparent hardware failures turn out to be a cable, a backplane, a firmware version or a configuration mismatch — all fixable, all free.

3. If the unit is genuinely faulty we replace it under the warranty type above.

Returns

We accept returns for a genuine hardware fault within the warranty period. We do not accept returns because a part was bought speculatively and turned out not to fit — so please confirm compatibility before ordering, or ask us to confirm it for you. We will, and it costs nothing.

If you have ordered a graded B or C unit and it does not suit your project, contact us. In practice we can usually issue a credit rather than arrange a return, which is faster and cheaper for both of us.