Every year, buyers lose deposits to suppliers that turn out to be trading offices, empty workshops, or companies operating under a different name than their invoice. A factory audit is the check that prevents this — and it costs a fraction of one lost shipment. Here is what a proper audit covers and how to read the results.
Why audits matter more than certificates
A supplier can email you a business licence, an ISO certificate and glossy photos of a factory floor — none of it verifiable from abroad. Platform badges (“Verified Supplier”) are paid features, not guarantees. An audit moves you from what a supplier claims to what you can see: a real production line, real equipment, real people doing real work.
The three levels of verification
- Desk check (free, do it for every supplier): business licence name and status, registered address vs. the address on their email, years in business, customs/export record where available. A quick search of the Chinese company name can reveal lawsuits or blacklist history.
- Remote/video check: ask for a live video walkthrough of the factory and office. Evasive answers or “the camera is broken” are red flags.
- On-site audit (essential before large orders): an auditor visits the factory in person, verifies the address matches, and checks what actually happens on the floor.
What a proper on-site audit checks
- Identity & premises: does the address on the licence match the site? Own factory or subcontracted? How many workers were actually present?
- Production capacity: number and condition of machines, realistic daily/monthly output vs. the volumes they quote you
- Quality system: QC staff on site, inspection records, testing equipment, defect tracking
- Management & environment: organization chart, working conditions, certifications relevant to your market (ISO, CE testing capability, etc.)
- Existing clients and orders: whose products are on the line right now — evidence of real business
Red flags that should stop you
- Address on the licence differs from the actual site — or the “factory” is an office with samples on shelves
- No production happening during working hours
- Unwillingness to allow visits, or constant schedule changes
- Pressure to pay a large deposit “today” before any verification
- Photos they send turn out to be stock images or another factory’s
Audits for every order size?
Not every purchase needs a full on-site audit. For small sample orders or low-value test batches from places like Huaqiangbei, a desk check plus careful payment terms is often enough. The rule of thumb: the larger the deposit and the more the order matters to your business, the more verification you should demand. As a guide: full audit before production for first orders above a few thousand dollars; re-audits every 6–12 months for long-term suppliers.
Doing it yourself vs. using an agent
If you are in China, auditing is a day trip. If you are not, you have three options: trust the supplier (risky), book an audit company (per-visit fees, little context), or work with a local sourcing agent who already knows the supplier landscape. Agents audit with context — they know which questions matter for your product and can follow up when something does not add up.
We are based in Shenzhen and carry out supplier verification and factory audits with photo and video evidence as part of our sourcing service. Before you commit to a supplier, ask us to check them out — it may be the cheapest insurance you ever buy. For the rest of the process, see our step-by-step sourcing guide.