Supplier Diligence for China Sourcing Teams: A Verification Framework Before Purchase Orders

Supplier diligence is a decision process, not a folder of certificates. Its purpose is to connect a buyer’s exact product and commercial needs to evidence about the legal counterparty, manufacturing route, quality controls and EU-market obligations.

1. Establish who you are contracting with

Capture the registered Chinese name as well as the English trading name, registration number, registered address, legal representative, contracting entity, invoice issuer and bank beneficiary. Search the official National Enterprise Credit Information Publicity System (GSXT) and retain the dated result. Translation and access can require local support; a name-only match is not enough.

2. Verify product-specific capability

Ask for the proposed production site, relevant equipment, current capacity, lead-time assumptions, key sub-suppliers and the process for controlling changes. Then test the claim with product-specific questions, samples, records, a remote walkthrough or an on-site audit where the risk warrants it. A factory tour is evidence of a facility at a moment in time, not proof of capacity, ownership or future performance.

3. Build an evidence map

For each requirement, list the evidence requested, document owner, product or model reference, issuer, date, expiry or review date and the gap that remains. A test report for a similar model, an ISO 9001 certificate and a generic “EU compliance” declaration answer different questions. Verify the issuing body and scope instead of treating logos as interchangeable.

4. Determine EU requirements from the actual product

Use the product’s intended use, users, materials, components and claims to identify applicable legislation. GPSR creates general consumer-product obligations, while CE marking and an EU declaration of conformity arise only under relevant harmonisation legislation. Check official EU tools and obtain specialist review when the scope is uncertain.

5. Test the commercial operating model

Normalise quotations to the same specification, quantity, delivery basis, tooling ownership, quality gates and payment milestones. Record who can approve changes, how non-conformity is remedied, whether subcontracting must be disclosed and what evidence is required before payment or shipment. There is no universal safe payment split or diligence duration.

6. Score fit without hiding hard stops

Weight price, lead time, capability, communication and risk to the buyer’s priorities. Keep mandatory evidence and safety gates outside the weighted total: a low quote should not offset an unresolved legal requirement. Preserve the source behind each score, confidence level, reviewer and next action.

SinoSource’s Essential report applies this framework to the buyer’s brief and compares a commercially relevant shortlist; it does not certify a supplier or replace a product-specific audit, test or legal decision.

Sources and scope

• China National Enterprise Credit Information Publicity System (GSXT)
• European Commission Access2Markets
• Regulation (EU) 2023/988 (GPSR)
• European Commission Safety Gate alert search
• ISO 9001:2015 — quality-management-system requirements

Last reviewed 13 August 2026. Operational guidance, not legal advice. Recommendations labelled as judgement should be tested against the product, supplier, contract and market involved.