A product catalogue, a video call, and an attractive quotation do not show whether a supplier owns the equipment it claims to use, has the capacity it promises, or controls quality in a repeatable way. Those questions matter most before a buyer sends a deposit or commits a meaningful order to a new supplier.
A audit a China factory well, use a defined set of checks for legal identity, product capability, quality practices, production records, subcontracting, and operational risks. The purpose is not to give a supplier a ceremonial score. It is to collect evidence that helps a buyer decide whether the factory is suitable for a specific product and order.
This guide is for brands, importers, and e-commerce sellers. It provides an operational due-diligence framework and does not replace legal, social-compliance, technical, or product-safety advice.
Separate supplier verification, factory audit, and product inspection
These activities solve different problems. Supplier verification checks whether the company exists, has appropriate business records, and is the party you expect to contract with. A factory audit assesses the actual facility, production capability, quality system, and working methods. A product inspection checks the finished or in-process goods against a defined product standard.
HQTS makes the same distinction: a supplier audit evaluates legitimacy and company information, while a factory audit focuses on production capability and quality management. A quality inspection assesses the goods against a predetermined specification.1
A factory audit can reduce uncertainty before production. It does not prove that every future shipment will be correct. Use the audit with controlled product specifications, sample approval, production monitoring where appropriate, and final inspection.
Verify the legal and commercial identity first
Start with the company identity before arriving at the factory. Ask for the business licence, registered company name, address, unified social credit code, legal representative, bank-account name, business scope, and factory location. The company named on the quotation, contract, invoice, and receiving bank account should be explainable and consistent.
ChinaMakersHub recommends checking the company’s business licence, unified social credit code, business scope, and whether payments go to a corporate account that matches the legal entity.2 These checks do not decide whether the factory is a good partner. They establish whether the buyer knows who it is dealing with.
Record any difference between a trading-company name, factory name, export entity, and bank account. A trading company may be part of a legitimate supply arrangement, but the buyer should know which entity manufactures the product, which entity signs the contract, and which entity receives payment.
| Identity check | Evidence to request or observe | Why it matters |
|---|---|---|
| Legal entity | Current business licence and company registration details | Links the supplier to the party on commercial documents |
| Alcance del negocio | Registered activities and manufacturing scope | Helps assess whether production is part of the legal business activity |
| Bank account | Account name matching the contracted entity | Prevents payment instructions from being treated as an afterthought |
| Factory location | Address, site identity, and contact responsible for the visit | Confirms the site being audited is the intended production site |
| Contract authority | Name and role of the person signing the agreement | Clarifies who can make commercial commitments |
Do not treat a document screenshot as the end of verification. Compare the document with what the supplier tells you and what you see on the site.
Check whether the facility can make your product
An audit should be tied to the product you intend to buy. A large factory may be genuine and still be a poor fit for your product category, material, order size, or quality requirement.
Walk the production flow. Start at incoming materials, then look at equipment, work in progress, quality checkpoints, packing, and finished-goods storage. Ask the factory to show how one relevant product moves through the process. Observe the machinery, tooling, work instructions, operator skill, raw-material handling, and the space available for your order.
ChinaMakersHub identifies facility size, equipment ownership, workforce, subcontracting disclosure, sample capability, raw-material inventory, and maintenance records as capability checks.2 These are not boxes to tick independently. They should fit together. A factory claiming a high output should be able to show a production floor, equipment, personnel, and material flow consistent with the claim.
Ask direct questions about subcontracting. Which processes are in-house? Which components, finishing operations, packaging tasks, or production stages are outsourced? Who approves and monitors any subcontractor? A factory can use outside processes legitimately. Hidden subcontracting creates a visibility problem because the buyer may be auditing one site while the product is made elsewhere.
Review the quality system as evidence, not a certificate
A quality certificate can be useful background information. It does not show whether the factory uses its procedures on the production floor. Ask to see recent incoming-material checks, in-process records, final-inspection records, calibration records for relevant measurement tools, nonconformance reports, and corrective-action evidence.
ChinaMakersHub recommends reviewing incoming inspection, in-process checks, final inspection, defect handling, retained quality records, calibration evidence, and quality-system certification.2 HQTS similarly describes factory-audit review of material handling, training, documentation, and quality controls.1
Look for a connection between documents and activity. Are material lots identified? Do operators have current instructions? Are inspection results attributable to a product or order? When a defect is found, can the factory explain what it did, who owned the correction, and how it confirmed the problem was resolved?
| Quality area | What to observe | Useful follow-up question |
|---|---|---|
| Incoming materials | Labelling, segregation, checks, supplier records | How does the factory prevent an unapproved material from entering production? |
| In-process control | Checkpoints, first-piece approval, operator instructions | What happens when a process check fails? |
| Inspección final | Inspection criteria, defect records, packaging checks | Which specification and sample does the final inspector use? |
| Measuring equipment | Condition, identification, calibration or verification records | How does the factory know its measurement tools remain suitable? |
| Acción correctiva | Defect report, owner, root cause, action, verification | Can the factory show a recent closed corrective action? |
The audit is more useful when you ask for examples from recent work rather than general promises. A real record may still show problems, but it tells you how the factory handles them.
Include safety, social, and environmental requirements when they matter
The audit scope should reflect your product, sales channel, customer commitments, and risk tolerance. A technical quality audit is not the same as a social-compliance, security, or environmental audit.
ChinaMakersHub lists quality or technical, social-compliance, environmental, and security audit categories as distinct assessments with different objectives.2 If a retailer, marketplace, customer, or contract requires a particular audit framework, request the relevant current report and review the scope, date, findings, corrective actions, and site identity. Do not assume a general quality audit meets an ethical or environmental requirement.
During an on-site visit, observe practical safety signals such as accessible exits, machine guards, protective equipment where relevant, and material-storage controls. If the factory uses painting, chemical processing, plating, or another activity with environmental or worker-safety implications, scope the review with qualified advice and applicable requirements.
Prepare the product evidence before the visit
An auditor can assess a factory more accurately when the buyer defines the product risk in advance. Provide the product specification, target order quantity, product samples or photographs, required materials or components, packaging needs, major quality concerns, and any channel or customer requirement. This focuses the visit on the production process that matters to the proposed order.
Ask the auditor to trace one comparable product through the facility. The review should connect incoming material controls, work instructions, equipment, in-process checks, packaging, and finished-goods storage. If the factory cannot show a comparable process, record that limitation. A factory may still be a candidate, but the buyer should not assume demonstrated capability.
Choose an audit method that matches the risk
An on-site audit gives the buyer or auditor direct access to the facility, documents, and production environment. A verified remote audit can be useful for an initial screen or lower-risk order when travel is impractical. It should not be treated as a pre-recorded showroom tour.
ChinaMakersHub recommends a structured live remote visit that includes a continuous floor walk, relevant production activity, materials storage, quality records, and business documentation.2 A remote method cannot reveal every physical condition. It can still help a buyer ask better questions and decide whether a local visit or third-party audit is needed.
An announced visit helps the factory arrange access and documents. A semi-announced window can provide a more ordinary view of the operation while reducing the risk that a visitor cannot enter the site. Decide the visit method based on the supplier relationship, order value, product risk, and the evidence you need.
Turn findings into a decision and action plan
An audit report is useful only when it changes what happens next. Classify findings by severity and product relevance. A gap in a non-critical housekeeping record is different from a conflict in company identity, undisclosed subcontracting, lack of relevant process capability, or a major quality-control failure.
Record each finding, evidence, owner, requested action, deadline, and verification method. For major issues, ask the factory for a corrective-action plan and evidence of closure before releasing the relevant production step or payment. ChinaMakersHub recommends treating critical findings as stop conditions and using a corrective-action plan with an owner, fix, deadline, and closure evidence for major findings.2
Avoid using an audit score as the only decision rule. A supplier may have a reasonable overall score but fail one requirement that matters to your product. Conversely, a factory can have correctable documentation gaps while being a strong technical fit. Document the decision rationale so the sourcing team understands what was accepted, what must be corrected, and what must be rechecked.
Use this China factory audit checklist
| Audit area | Buyer evidence | Decision question |
|---|---|---|
| Legal identity | Licence, company details, bank-account alignment, site address | Do we know who will manufacture, contract, and receive payment? |
| Product capability | Production flow, relevant equipment, workforce, materials, sample process | Can this site make our product in the required quantity and method? |
| Subcontracting | List of outsourced processes and controls | Are any critical processes performed outside the audited site? |
| Sistema de calidad | Current inspection, calibration, nonconformance, and corrective-action records | Does the factory use evidence-based controls for a comparable product? |
| Facility controls | Material flow, product identification, maintenance, packing, safety observations | Are the working conditions suitable for the order’s product and risk? |
| Required compliance scope | Applicable audit reports, product-specific evidence, corrective actions | Does the supplier meet any customer or channel-specific requirements? |
| Corrective actions | Action plan, owner, due date, closure evidence | What must happen before deposit, production, or shipment release? |
Frequently asked questions
Is a factory audit the same as a pre-shipment inspection?
No. A factory audit assesses the supplier and its systems before or outside a particular production run. A pre-shipment inspection checks finished goods against the buyer’s product requirements before shipment.1
Can I audit a China factory remotely?
A structured live remote audit can provide useful evidence when it includes current business documents, a continuous factory walk, relevant production areas, materials, and quality records. It is less able to confirm physical conditions than an on-site visit, so match the method to the product and order risk.2
Does an ISO certificate prove factory quality?
It can show that a quality-management system has been certified, but it does not replace review of actual production controls, current inspection records, calibration, defect handling, and product-specific capability.1
Use the audit to test evidence, not promises
A audit a China factory effectively, confirm identity, examine the actual production flow, test the quality records against the floor, ask about subcontracting, and assign clear actions for every significant gap. The audit should give the buyer a documented view of what the factory can do today and what must be controlled before the order proceeds.
Supplier Ally can help buyers organise audit criteria, coordinate local verification, review supplier evidence, track corrective actions, and connect audit findings with product specifications, sampling, inspection, and production follow-up. For legal, social, technical, or product-specific compliance decisions, use appropriately qualified advisers.
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