MSC

Guide

Factory audit checklist: what to check in a Chinese factory before you order

A factory audit checks on site that a supplier really makes your type of product and controls its quality. A useful audit covers ten areas: legal identity, site and equipment, what is subcontracted, capacity, quality organisation, incoming material, in-process and final inspection, measuring equipment, storage and traceability, and experience. Below is the checklist we use, with the evidence recorded for each area.

Updated 5 November 2026 · MSC Quality Control, Ningbo

Technical drawing used to prepare a factory audit

Supplier check or factory audit?

A supplier check is done from records: registration, business scope, court records and the bank account. A factory audit is done on site and shows what the records cannot: the machines, the people and how quality is controlled. Start with a records check of your candidates, then audit the one or two you shortlist.

The checklist

An auditor spends about a day on site. The ten areas below are the ones we cover; each ends with evidence that goes into the report.

AreaWhat the auditor checksEvidence recorded
1. Legal identityThe business licence matches the company on the quote and on the bank account; the registered address matches the site; the business scope includes productionPhoto of the licence on site, gate and signage
2. Site and equipmentProduction lines for your product; type, number, age and condition of the machines; maintenancePhotos of each workshop, equipment list
3. In-house or subcontractedWhich key processes are done on site (moulding, machining, welding, plating, painting, assembly) and which are sent out, and to whomList of processes and subcontractors
4. CapacityShifts, number of workers, current order load; whether the lead time quoted matches the machines and the peopleProduction schedule, headcount
5. Quality organisationWritten procedures; quality staff and whether they report to production; ISO 9001 certificate checked on the certification body's websiteCertificate, organisation chart
6. Incoming materialHow raw material and components are checked; approved supplier list; material certificates; quarantine of rejected materialIncoming inspection records
7. In-process and final inspectionFirst-article check, patrol inspection, final inspection before packing; marking and handling of nonconforming parts; reworkInspection sheets, photos of the reject area
8. Measuring equipmentInstruments available for your critical characteristics; calibration labels and recordsCalibration certificates
9. Storage, packing and traceabilityBatch marking, warehouse conditions, rust and damage prevention, packing areaPhotos
10. Experience and basic safetySimilar products made and markets served; how complaints are handled; fire exits, extinguishers, protective equipmentNotes and photos

Red flags during an audit

  • The address on the licence is not the site you visit, or the "factory" is an office or showroom
  • No machines for the process your product needs
  • Refusal to let the auditor into a workshop or to take photos
  • An ISO 9001 certificate that cannot be found on the certification body's website
  • Most key processes subcontracted, with no control of the subcontractors
  • No inspection records, or records that all look filled in on the same day

What a factory audit does not cover

  • The quality of your actual order: that is checked by a pre-shipment inspection once the goods are made.
  • Social compliance audits such as amfori BSCI or SMETA, which are run by accredited auditors.
  • Product certification and laboratory tests, such as CE marking or electrical safety, which are done by accredited laboratories.

How MSC runs a factory audit

We adapt the checklist to your product (for example aluminium windows and doors in Foshan) and send a written report with photos for each area. A factory audit costs $360 per audit. For a new client, we check the records of up to three candidate suppliers free of charge, then audit the one you shortlist (supplier verification).

Have a factory, an order or a shipment to check?

Tell us what you need. We typically reply within one business day.