A polished supplier profile, low quotation and fast reply do not prove that a supplier can manufacture your product consistently. Before paying a deposit, buyers should verify the legal entity, production route, capacity, quality controls and commercial details that matter to the order.
This China factory audit checklist is designed for e-commerce brands, importers and distributors. It can be used for a remote supplier review, an on-site factory visit or as a brief for an independent audit.
What is a China factory audit?
A factory audit is a structured review of a supplier's identity, facilities, production processes, quality system and ability to meet a defined requirement. It is different from a pre-shipment inspection, which checks finished or near-finished goods against an approved specification.
An audit answers whether the supplier appears capable of controlling the work. An inspection answers whether a particular production lot meets the agreed checks. Many projects need both.
1. Verify the legal company and payment beneficiary
Record the supplier's registered company name in Chinese and English, registration number, registered address, operating address and legal representative. Compare these details with the quotation, contract, invoice, bank account and supplier-platform profile.
- Is the contracting company the same entity you reviewed?
- Does the bank beneficiary match the contracting party?
- If payment goes to another entity, is the relationship documented and understood?
- Is the operating site the same location shown in the supplier's materials?
A different trading or export entity is not automatically unacceptable, but unexplained differences should be resolved before payment.
2. Confirm what is manufactured in-house
Ask the supplier to map the complete production route. Identify which processes, components and packaging steps are controlled internally and which are subcontracted.
For custom packaging, printing, lamination, die cutting, finishing and box assembly may occur at different facilities. For custom clothing, fabric production, dyeing, cutting, sewing, embroidery and washing may involve several partners.
Document the critical outsourced processes, approved subcontractors, incoming checks and traceability method. The purpose is not to reject outsourcing; it is to understand who controls product-critical work.
3. Match the equipment and process to your product
Do not audit a factory only by counting machines. Check whether the equipment, tooling, operators and process controls fit your specification and expected volume.
- What equipment is used for the quoted product?
- Which production steps create the highest quality risk?
- What is the realistic output for your model and specification?
- How much current capacity is already committed?
- Which maintenance, calibration or setup records are kept?
A wet wipes factory should be reviewed around substrate handling, liquid preparation direction, converting, packing and hygiene controls. A garden tools factory requires a different review of materials, forming, machining, heat treatment, coating, assembly and function checks.
4. Review material and component control
Ask how materials are approved, received, identified, stored and issued to production. Check whether critical materials and components can be traced to a supplier and batch.
For products with multiple sizes or variants, confirm how the factory prevents mixing. For buyer-specified material, confirm whether substitutions require written approval. For printed packaging and labels, review artwork approval, version control and disposal of obsolete materials.
5. Examine the quality-control system
A certificate alone does not show how the factory controls your product. Request evidence of the actual workflow:
- Incoming material checks
- First-article or setup approval
- In-process inspections and test frequency
- Final inspection and release authority
- Nonconforming-product segregation
- Corrective-action records
- Measuring-equipment calibration
- Batch, lot or production-date traceability
Use the approved specification and sample as the basis for checks. See the China product inspection checklist for production-lot verification.
6. Check category-specific risks
A useful audit changes with the product:
- Baby diapers and training pants: material identity, size control, construction, hygiene direction, packaging and agreed performance checks.
- Adult incontinence products: format, size range, raw-material control, construction consistency and pack identification.
- Beauty tools: skin-contact materials, component consistency, assembly, cleanliness, logo and retail packaging.
- Pet accessories: stitching, hardware, load-bearing construction, sizing and labeling.
- Home organization: dimensions, assembly, surface finish, nesting, carton strength and pack-out.
7. Validate documents against the exact product
Check the company name, factory address, product or model, standard, issuing body and validity date on each document. A report may be genuine but irrelevant to the product being quoted.
Destination requirements depend on product classification, materials, claims and sales channel. Electrical, battery, children's, food-contact and skin-contact products may require different evidence. Use qualified compliance support where necessary.
8. Review sample and change-control procedures
Confirm how the approved sample is identified and retained. Ask who can approve material, component, process, packaging or subcontractor changes after approval.
The purchase specification should state that material substitutions and significant production changes require written buyer approval. A supplier should not treat an approved visual sample as permission to change internal construction.
9. Test the claimed capacity and lead time
Request a simple capacity explanation based on the actual production route: machines or lines used, shifts, output assumptions, yield, current commitments and bottlenecks. Compare this with the promised lead time.
Capacity is product-specific. A factory may have high total output but limited capacity for your material, color, size, packaging or test requirement.
10. Complete a payment-readiness review
Before a deposit is approved, confirm:
- The legal entity, contract and payment beneficiary are understood.
- The product specification and quotation scope match.
- MOQ, tooling, samples, packaging and testing costs are documented.
- The approved sample and artwork versions are identified.
- Lead time begins from a clearly defined approval or payment point.
- Quality checks, defect handling and inspection access are agreed.
- Tooling, design and artwork ownership are documented where relevant.
- Change control and communication responsibilities are assigned.
Remote review vs on-site audit
A remote review can screen company details, documents, quotations, live video of facilities, process records and product samples. It is useful for early qualification, but it may not reveal all operational conditions.
An on-site or independent audit is more appropriate when order value, product risk, tooling investment, compliance exposure or supply continuity justifies deeper verification. The depth should be proportional to the commercial and product risk.
Red flags that require clarification
- Company, address or bank details change without a clear explanation.
- The supplier avoids showing production areas or critical processes.
- Documents belong to another company, model or facility.
- Quotations omit specifications, packaging or key commercial assumptions.
- Very broad product ranges are claimed with no clear manufacturing route.
- Samples are acceptable but bulk-production controls cannot be explained.
- Pressure is applied to pay before specification and responsibilities are confirmed.
A red flag is a prompt for evidence and clarification, not automatic proof of wrongdoing.
Build the audit around your product
MoleSupply currently works with factory resources across nine categories. Browse the China Manufacturer Directory, or review our guide to comparing China manufacturers.
To prepare a product-specific supplier review, send your product link or image, quantity, destination, specifications and key requirements through the MoleSupply sourcing request. Factory capability, MOQ, capacity, documents and pricing are confirmed by project rather than assumed from a directory listing.
Need a clearer supplier comparison?
Share a product link, image or short brief. Our China-based sourcing team can help organize the next steps for review.