About Renfeng Technology

关于广州壬锋科技

Who we are

Guangzhou Renfeng Technology Co.,Ltd (广州壬锋科技有限公司) is an enterprise hardware trading company based in Guangzhou, Guangdong. Since 2016 we have supplied refurbished and zero-hour enterprise storage, servers, networking and components to buyers in more than forty countries.

We are not an OEM, a distributor or a broker. We buy decommissioned hardware directly from data-centre refresh programmes, hardware lifecycle contractors and corporate estates in the Pearl River Delta and around Asia, and we test every unit ourselves before it is offered.

What we sell

Our catalogue concentrates on the platforms that actually appear in secondary enterprise trade:

Enterprise storage — Seagate Exos X16/X18/X20, WD Ultrastar DC HC520/HC550, Toshiba MG, and the associated shelf arrays (Dell ME5024/ME5084, HPE MSA, NetApp DS and AFF).
Servers — Dell PowerEdge R-series, HPE ProLiant DL, Lenovo ThinkSystem SR, blade platforms from Dell, HPE and Cisco.
Networking — Cisco Catalyst and ISR, Juniper EX, Aruba CX, Dell EMC Networking, FortiGate and PA-series.
Components — DDR3L/DDR4/DDR5 RDIMMs, Xeon and EPYC processors, NVIDIA accelerators, and hot-plug power supplies.

Our position on grading

We sell a lot of zero-hour drives. In this trade they are called "pulled" units: drives that were manufactured and installed, then decommissioned before they were ever powered on. They read as new because they are new. They are not factory sealed and we never describe them as such.

Where the distinction matters — warranty language, packing, customs classification — we say "Brand New Pulled", because that is the accurate term and the buyer needs an accurate description to make a decision. Our grading documentation explains this in full on the Warranty page.

Testing

Testing is the part of this business that cannot be shortcut, so it is the part we spend money on.

Drives: SMART log read, full surface scan, and a written zero-sectors result per serial.
Flash: endurance and wear counters read, percentage-used recorded.
Servers: memory cycled at full capacity with the quoted DIMM configuration, drive tested in every bay, storage controller verified.
Arrays: a test volume created, burned in, then the array returned to factory default with a configuration backup supplied.
Networking: every port loop-tested, uplink verified, licence state captured in writing.
Accelerators and workstations: sustained-load burn-in with thermal logging, not a simple enumeration.

Where we are

Our warehouse and testing facility are in Guangzhou. The commercial offices we work with are in Guangzhou, Munich and Atlanta. Everything ships from China, FOB Shenzhen by default, or CIF to your port.