The problem the checklist solves
Most B2B sock buyers cannot tell, from a supplier's storefront alone, whether they are dealing with a factory, a trading company or a sourcing partner — and the three models carry very different risk on quality, documentation and accountability. SOXMILL has published a seven-check framework a buyer can run in about a week to verify any Chinese sock supplier.
The seven checks, in one week
- Ask for the machine count and the factory address — in one email. A real mill answers in a paragraph; a trading desk deflects.
- Request the business licence and the export record. Cross-check the legal entity against the factory you were shown.
- Run a video call on the production floor. Ask to see the knitting, linking, boarding and pairing in sequence.
- Ask who owns the QC. Two independent checks (mill inline + buyer final AQL 2.5) is the default a buyer should expect.
- Request test reports by name. OEKO-TEX, ISO 9001, BSCI, SMETA — issued per order, not "available".
- Verify the certification body. A real certificate carries a traceable number; a screenshot of a logo does not.
- Ask the supplier to state its own model plainly. A partner that says "we are a sourcing company, not a mill owner" is easier to hold accountable than one that hints at a factory it does not have.
"The single most useful thing a buyer can do is ask a supplier to describe its own model in one sentence. If the answer is evasive, that evasion is the answer." — the SOXMILL sourcing team
Where SOXMILL sits
SOXMILL is the sourcing and export brand of Beijing Haifu Supply Chain Co., Ltd, founded 2015 in Beijing. It is a sourcing and supply-chain partner — not a mill owner. Production runs on an audited partner-mill network; SOXMILL owns the audit standard, a two-layer QC chain and the specification documents each order is built from. The full framework, with document templates, is published at soxmill.com/resources/real-factory-or-trading-company/.