Why buyers mix these two up
Both involve a stranger walking into a Chinese factory with a clipboard and a camera. That is where the similarity ends.
A factory audit answers one question: should I work with this company at all?
A product inspection answers a different one: is this batch of goods what I ordered?
You can pass one and fail the other. A well-organised factory can still ship you 4% defective units. A supplier with flawless samples can turn out to be a trading company with no production line, no export licence, and a bank account that empties next month.
Buyers who skip the distinction usually pay twice: once for the wrong service, and again for the bad order.
What a factory audit actually checks
Also called a supplier audit, factory verification, or vendor assessment. It happens before you commit money — before the deposit, before the purchase order, ideally before you spend three weeks negotiating.
Typical scope:
- Legal identity — business licence, registered capital, ownership structure, and whether the entity named on your contract is the same one that can legally receive foreign currency.
- Real business type — manufacturer, trading company, or a manufacturer that also trades. A large share of suppliers listed as factories on B2B platforms are neither.
- Production capability — machinery list, number of lines, monthly capacity, current order load, and whether your order realistically fits the schedule they promised.
- Quality systems — incoming material checks, in-line QC, final QC, calibration records, defect tracking, and how they handle a customer complaint.
- Certifications — the actual documents, checked against the issuing body. Not a scanned PDF with a logo that stops making sense when you zoom in.
- Workforce and compliance — headcount, shift patterns, working hours, safety conditions. This matters if you sell into the EU, UK, or US, or if your own buyer has a social compliance policy.
- Financial signals — litigation records, government credit data, payment disputes, and whether the owner is also a director of a company that was dissolved last year.
An audit usually takes one to two days on site, plus desk research beforehand. You receive a report with photos, findings, and a risk rating. Some buyers use it as a pass-or-fail gate; others use it as ammunition in a price negotiation.
What a product inspection covers
This happens during production. The most common booking is pre-shipment inspection (PSI), done when goods are 100% finished and at least 80% packed.
| Type | When it happens | What it catches |
|---|---|---|
| Pre-production inspection | Before mass production starts | Wrong materials, wrong components, spec misread |
| During-production (DUPRO) | 20–40% complete | Problems early enough to fix without scrapping the run |
| Pre-shipment (PSI) | 100% made, 80% packed | Defects, quantity gaps, packaging, labelling |
| Container loading | At the loading bay | Short shipment, damaged cartons, swapped goods |
Inspectors work from AQL sampling, usually following ISO 2859-1. They pull a defined sample size, check it against your spec sheet and approved sample, and issue a pass or fail. Standard checks include appearance, dimensions, function, safety points, barcode scanning, carton drop test, shipping mark accuracy, and total carton count.
The output is a report with timestamped photos. If the batch fails, you decide: rework, reject, or negotiate a discount. That conversation goes very differently when you have evidence in writing rather than a suspicion.
Which one do you need? A decision table
| Your situation | Factory audit | Product inspection |
|---|---|---|
| Brand-new supplier, first order above roughly $5,000 | Yes | Yes |
| New supplier, small trial order under roughly $2,000 | Optional | Usually yes |
| Existing supplier, repeat order | Not every time | Yes, every shipment |
| Custom product, new tooling or mould | Yes | Yes, plus a pre-production check |
| Supplier claims to be the manufacturer | Yes | Depends on order size |
| High-value electronics, medical, children's products | Yes | Yes, with a stricter AQL |
| Simple commodity, low value, short lead time | Maybe | Maybe |
| You are switching suppliers after a bad batch | Yes | Yes |
If you can only afford one, the honest answer depends on what you do not know:
- You do not know the company? Book the audit.
- You do not know the goods? Book the inspection.
- You do not know either, and the order is large? Do both, and treat the audit as the cheaper of the two.
The mistakes that cost the most
Skipping the audit because the samples were good. Samples are made in a different room, often by different people, sometimes at a different site entirely. They say nothing about capacity, compliance, or whether the company will still exist in six months.
Auditing once and assuming it holds. Factories change ownership, lose certifications, move workshops, and take on more orders than they can handle. A two-year-old audit is a historical document, not a current fact.
Booking the inspection too late. A PSI completed at 100% packed, three days before the vessel sails, leaves no room for rework. During-production checks exist because late news is expensive news.
Shopping only on price. A one-page report with eight photos is not an inspection. Ask what the report contains before you compare quotes.
Having no written spec. Inspectors check against a standard. If your standard is a chat message saying the goods should be the same as last time, you have already handed the argument to the supplier.
Timing and cost, roughly
Factory audit: USD 300–800 per man-day on site, depending on city, depth of the check, and whether social compliance is included. Remote locations add travel. Turnaround is usually 3–5 working days.
Product inspection: USD 250–400 per man-day, based on sample size and product complexity. A typical consumer goods PSI is one man-day, with the report delivered within 24–48 hours.
Both numbers are rounding errors next to a failed container. One rejected 40HQ of kitchenware can cost more than a year of QC bookings.
A working sequence that holds up
- Shortlist two or three suppliers.
- Run a factory audit on your preferred one. Add the runner-up if the order value justifies it.
- Lock the spec, the approved sample, and the AQL level into the purchase order.
- Book a pre-production or during-production check if the product is new or technically involved.
- Book PSI when production finishes, dated before the forwarder collects.
- Add container loading supervision if the supplier has a history of short shipments.
Questions worth asking any inspection firm
- Who actually performs the inspection — your own staff or subcontractors?
- What does the report include, and how many photos?
- Do you check packaging, labelling, and shipping marks, or only the product itself?
- What happens if the report turns out to be wrong?
- Can you handle a follow-up re-inspection without starting the whole booking process again?
Straight answers to those five questions tell you more than any price list.
The two services are not competing options. An audit protects you from the wrong partner; an inspection protects you from the wrong shipment. If you are placing a first order with a new supplier, budget for both and stop treating QC as an optional extra. Globesino runs factory audits, product inspections, sourcing, and delivery for overseas buyers who do not read Chinese and do not want to fly in for every milestone — one local team, English reports, one point of contact.