How to Verify a Chinese Supplier Before You Pay

Most overseas buyers treat verification as a document request: the supplier emails a business license, an ISO certificate, and a company profile PDF, and the deal proceeds. That packet proves one thing only — that a legally registered company exists somewhere in China. It does not prove the company owns a single machine, that the certificate covers your process, or that the parts will be made by the people who answered your email.

The failure mode is usually not outright fraud. It is capability mismatch: a legitimate, registered trading company that quotes your part, subcontracts the machining to one shop, the anodizing to another, and the assembly to a third, then absorbs the coordination risk you thought you had transferred. The license is genuine. The factory you imagined does not exist.

This guide verifies a supplier in three separate layers, because each one catches a different lie. Run all three before the deposit moves.

Layer 1: Prove the legal entity and the money path

Start with the 18-character Unified Social Credit Code (统一社会信用代码) on the business license, and look it up on gsxt.gov.cn — the National Enterprise Credit Information Publicity System, run by the State Administration for Market Regulation. It is free and official. Read four fields, not one:

• Company name — it must match the contract, the bank account, and the name on Alibaba or Made-in-China, character for character.
• Legal representative and status — the status should read 存续 or 在营 (active). A supplier claiming fifteen years in business with a registration three years old needs explaining.
• Business scope (经营范围) — this is the field that catches traders pretending to be factories. A manufacturer lists production, processing, or manufacturing (生产, 加工, 制造). A trader lists sales, wholesale, or import-export (销售, 批发, 进出口). If the scope covers only sales, you are dealing with a trading company — which is fine, as long as you price it that way.
• Registered capital — since 2014 this is subscribed, not paid-in, so a large figure is close to meaningless on its own. Do not be impressed by it.

For additional context — legal disputes, changes in ownership — commercial databases such as Tianyancha or Qichacha help, but verify the core record on the government site first, since commercial databases are not always up to date.

Then check the money path, because this is where fraud actually happens. The beneficiary account name on the proforma invoice must match the business license exactly. A personal name, a Hong Kong account for a mainland supplier, or a name that does not match is the single biggest fraud red flag. Since December 30, 2022, China has abolished the separate foreign-trade-operator filing, so a company automatically gains import and export rights once it holds a business license — but the bank account still has to belong to that company.

If a supplier hesitates to share its license or credit code, that is an instant red flag. Every legitimate company sends it within minutes.

Layer 2: Prove the machines and the quality system fit your part

A real factory answers technical questions. Ask which chip, which mold, what happens if you change one dimension, which operations are subcontracted. Traders guess; factories answer.

Read the ISO 9001 certificate the way an auditor would: certificate number, issuing body, expiry date, and the scope line. A certificate scoped to generators does not cover your smart switch. Look the certificate up on the certification body’s own site — a certificate that cannot be verified there is decoration.

Then check capability against your part:

• Machine nameplates. Ask for photos of the machine nameplates, not the showroom. A nameplate shows the machine model and year — hard to fake, easy to check.
• Calibration. Ask when the key measuring equipment (calipers, CMM, test rigs) was last calibrated, and for the calibration stickers in photos.
• Subcontracting. Ask directly which operations leave the building — PCB assembly, painting, injection molding, final testing. Subcontracting is not disqualifying, but undisclosed subcontracting is: it means your quality control ends at a door you never saw.
• Production capacity. Ask how many units of your product the line produces per day, and what else is running on it this month. A factory that quotes 5,000 units in 10 days on a line that makes 200 a day has not done the math.

Layer 3: Hard-to-fake evidence

Documents can be photoshopped. A live workshop cannot.

• Unannounced video walk. Ask for a live video walkthrough of the workshop on a normal weekday, with the camera pointed at the machines and the gauges, not the showroom. Ask them to pan across the raw-material store, the packing area, and a wall calendar or a live phone screen to prove it is happening now. If you are told the factory floor is closed for a “security audit” whenever you ask, you have your answer.
• Paid sample with a QC report. Always order a paid sample before a bulk run, and test it the way your customer will. If the product matters, send one sample to a lab for a basic material composition analysis — a third-party inspection company can arrange it.
• Third-party factory audit. For a serious order, hire a professional. An audit sends an independent inspector to the site to check real production capacity, workforce size, equipment condition, subcontracting habits, and whether a quality system exists in practice or only on paper. Firms such as QIMA, SGS, and Bureau Veritas offer this across China, and a basic supplier audit costs roughly $300–$800 depending on the region and duration — far less than a failed container. Book the audit before you confirm the order or pay the deposit, when you still have leverage. Factories that are confident usually agree to an independent audit — and sometimes even offer to split the cost.
• Customer references. Ask for two buyers in your region who have ordered a similar product. A factory with real export history will have them.

The six documents to demand before any deposit

1. Business license (stamped scan) — check it on gsxt.gov.cn.
2. ISO 9001 certificate — number, issuing body, expiry, scope line.
3. Product test reports for your exact model (CE/EMC/LVD/RoHS where applicable).
4. A recent export reference — a bill of lading or shipping record with sensitive details redacted.
5. The proforma invoice — with the company bank account details matching the license.
6. The golden sample agreement — the approved sample that defines “correct.”

The five-minute checklist (free, do this first)

1. Search the company’s Chinese name on gsxt.gov.cn. Confirm the legal name, address, and credit code.
2. Read the business scope: manufacturing words or sales words?
3. Demand a live video walk of the production line, at a specific date and time.
4. Request a sample with a full QC report.
5. Arrange a third-party inspection before shipment — or at least a pre-production meeting.

Then pay the deposit — and keep 70% against the bill of lading and a passed pre-shipment inspection. Verification significantly reduces risk, but it does not eliminate it; the payment structure is the last layer of protection, and it only works if you keep it.

Sources

• ZeroAlu, “How to Verify a Chinese Factory Before Paying a Deposit” — https://www.zeroalu.com/blog/how-to-verify-chinese-factory-before-deposit
• ChinaComes, “How to Verify a Chinese Factory: 7 Red Flags and 5 Green Lights” — https://chinacomes.com/how-to-verify-a-chinese-factory-7-red-flags-and-5-green-lights/
• SourcingAll, “How to Verify a Chinese Supplier Before Placing an Order” — https://sourcingall.com/quality-control/verify-chinese-supplier-before-order/
• OlaChina, “Find and Vet Chinese Suppliers Without Getting Burned” — https://olachina.org/vet-chinese-suppliers/
• Minden Sourcing, “How to Verify a Chinese Supplier: Complete Checklist for Importers” — https://mindensourcing.com/how-to-verify-a-chinese-supplier/