Supplier Verification · 2026
Factory Audit Checklist: What to Verify Before You Pay
The most expensive mistake in sourcing isn't a bad price — it's paying a factory you never verified, then discovering the workshop, the license, or the quality system isn't real. This is the checklist we run on every on-site audit, distilled into the points that actually separate a safe supplier from a risk.
Why audit before you pay
A deposit is trust turned into money. Once it leaves your account, your leverage collapses and recovery is slow or impossible across borders. An audit is the cheapest insurance you can buy: for the cost of a visit, you confirm the supplier is who they claim, can make what they promise, and won't vanish with your payment.
Skipping it to "move fast" is how first-time buyers lose their first deposit. See Josh's on-site audit service →
1. Legal & business license
This is the foundation — everything else is moot if the entity isn't real or doesn't make your product.
- Business license with a valid unified social credit code (统一社会信用代码).
- The licensed business scope actually covers manufacturing your product category.
- Cross-check the license number against the official registry where possible — don't trust a screenshot.
- Confirm the entity name on the contract matches the license exactly (a common shell-game trick).
2. Production capability
A supplier can claim any capacity in a chat. The floor tells the truth.
- Machines & equipment: count and condition match the claimed output?
- Workforce: headcount and skill mix support the volume they quoted?
- Workshop layout: a logical flow (incoming → production → QC → packing) vs. chaotic stacking.
- Current load: are they at 30% or 95%? A full floor may mean long lead times; an empty one may mean they subcontract.
3. Quality system
Quality that isn't built in gets inspected in — badly, at the end.
- Certifications your market requires (ISO 9001, and CE / FCC / UL as applicable).
- In-process QC: are there checkpoints during production, or only a final glance?
- Defect tracking: do they record reject rates and corrective actions, or shrug?
- Calibration: are measuring tools calibrated and documented?
Why independent QC matters even after a clean audit →
4. Track record & references
- Export history: bills of lading or customer references you can actually call.
- Similar products: have they made something like yours, not just "something"?
- Client tenure: long-standing buyers are a strong signal of reliability.
- Complaint handling: ask how they resolved a past quality dispute.
5. Physical red flags
These show up only on the ground — and any one is worth walking away:
- Refusal to show the workshop or specific production lines.
- Capacity visibly far below claimed output (too few machines, too few people).
- Product from other brands sitting in their "finished goods" area (they're a trader, not a maker).
- Poor housekeeping and no traceability labeling on the floor.
- Pressure to pay a deposit before any verification is complete.
Pair this with negotiation tactics so you don't over-commit before vetting. Read the MOQ negotiation guide →
On-site vs remote audit
You can do a partial audit remotely: verify the license and export records online, request a live video walkthrough, and check references by phone. That filters out the obvious fakes. But physical red flags — subcontracting, capacity mismatches, housekeeping — are only visible in person. Treat remote as a filter, not a substitute. A local partner's pooled on-site visit is usually the most cost-effective way to close that gap.
Printable one-page checklist
Take this into every audit. Mark each before you release a deposit:
- Business license valid + unified social credit code verified
- Business scope covers your product category
- Contract entity name matches license exactly
- Machine count & condition support quoted capacity
- Workforce size supports quoted volume
- Required certifications present (ISO / CE / FCC / UL)
- In-process QC checkpoints observed
- Defect/reject tracking documented
- At least one verifiable export reference
- Workshop accessible & no trader red flags
- No pressure to pay before verification
FAQ
What documents should I check before paying a Chinese factory?
At minimum: the business license (with a valid unified social credit code), proof of export history, and any certifications your market requires (CE, FCC, etc.). Cross-check the license number on the official registry where possible.
How much does a factory audit cost?
A third-party on-site audit typically runs a few hundred dollars plus travel, depending on region and depth. A local partner's pooled audit is usually far cheaper per client because the visit is shared across several engagements.
Can I audit a factory remotely?
Partially. You can verify the business license and export records online, and request a live video walkthrough. But physical red flags — subcontracting, capacity mismatches, poor housekeeping — are only visible on the ground. Remote is a filter, not a substitute.
What are the biggest red flags in a factory audit?
A license that doesn't match the entity making your product, refusal to show the workshop, capacity far below claimed output, no in-process QC, and pressure to pay before any verification. Any one of these is worth walking away.
Want an audit run on your shortlist?
Send us the factories you're considering. We'll come back within 12 hours with an on-the-ground verification plan — and run the audit if you want it done.
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