10 Red Flags When Evaluating a Chinese Supplier (and How to Verify Each One)

March 2026 · 7 min read · Sourcing

Most sourcing disasters follow the same pattern: the warning signs were visible early, and nobody stopped to check them. Here are the ten red flags we look for when a buyer asks us to evaluate a supplier — and what to do about each one.

1. The price is far below every other quote. In China, a price 20–30% below the market usually means different materials, fewer processes, or a bait-and-switch later. Verify: ask for a cost breakdown and a sample produced to the agreed spec.
2. The factory address is vague. "Somewhere in Guangdong" is not an address. Verify: ask for the business licence and verify the address exists on the ground.
3. The company name keeps changing. A string of recently renamed legal entities is a classic pattern for restarting after disputes. Verify: check the business licence history via enterprise registries (e.g. the national enterprise credit system).
4. Certificates belong to a different entity. The factory shows a CE certificate under another company name. Verify: match the legal name on every certificate to the entity you are contracting.
5. They only want to talk on WhatsApp, never email or video. Some of this is cultural, but a refusal to leave a written trail is a risk. Verify: insist on written quotations and a proper contract.
6. Payment terms demand 100% upfront. For a first order, that is a very high risk request. Verify: negotiate T/T with deposit + balance before shipment, or L/C for larger amounts.
7. The MOQ is suspiciously low for their claimed factory size. A 200-person factory that happily does 50 pieces is either not really that size or is planning to resell from somewhere else. Verify: visit the floor.
8. Sample quality and mass production quality differ. The beautiful sample was made by hand. Verify: a pre-production sample from the actual line, plus inline inspection.
9. They promise every certification instantly. Genuine certifications take time and money. Verify: check certificate numbers with the issuing bodies.
10. The business contact cannot answer basic product questions. If the "sales manager" doesn't know the product, someone else will actually be making decisions — and you won't know who. Verify: insist on talking to the engineer or QC manager.

One rule to remember

Any claim you cannot independently verify — by documents, by a third party, or by visiting — is not a fact, it is a promise. Pay for verification on the first order; it is the cheapest insurance in sourcing.