A factory audit is the closest a buyer gets to independent evidence of what a supplier can actually do. You can read a website, scroll through a platform profile, sit through a polished sales call — none of it tells you whether the production floor exists, whether the machines run, or whether the QC system is more than a binder on a shelf. The audit does, whether you walk the floor yourself, send someone you trust, or hire a third-party inspector.
Factory Audit vs Video Walkthrough vs Pre-Shipment Inspection
| Method | When to Use It | What It Can Demonstrate | What It Cannot Demonstrate | Typical Limitation |
|---|---|---|---|---|
| Live video walkthrough | Early supplier screening; before any money is committed | Facility exists; basic equipment is present; contact has access | Production capability; QC systems; material quality; worker competency | Can be staged or conducted at a different facility; no independent verification |
| Factory audit (on-site) | Before placing a significant order; when compliance matters | Production capability; QC systems; material traceability; worker conditions; equipment condition | Future production quality; how the factory performs under deadline pressure; that your order will be made here | A single audit captures one moment in time; quality can change between audits |
| Pre-shipment inspection | After production is complete; before final payment | Goods exist; quantity matches order; visible defects; packaging | Internal quality; durability; material composition; whether specs are met | Inspects finished goods only — cannot see production process or fix issues |
| During-production inspection | Mid-production for large or high-risk orders | Production process is being followed; early defects can be caught | Final product quality; issues that arise after inspection | Covers only the moment of inspection; does not guarantee consistency through the full batch |
This guide breaks down what to examine, what to document, and how to read the results without over-reading them.
Why Audit a Factory?
An audit answers three questions that other verification methods leave open:
| Purpose | What the audit reveals |
|---|---|
| Capability | Can this factory produce your product at the quality and volume you need? |
| Risk | Where are the weak points — QC, materials, worker practices, compliance — that could affect your order? |
| Baseline | What is the factory's current state, so you can track whether it improves or slips over time? |
A supplier that presents well online and responds quickly to messages can still run a chaotic floor. The gap between how a factory communicates and how it produces is exactly what an audit is meant to expose.
Pre-Audit Document Checklist
Before anyone walks through the gate, request and review the paperwork. Reviewing it ahead of time tells you what the factory claims — the audit then either confirms or contradicts those claims.
| Document | What to check |
|---|---|
| Business license (营业执照) | Cross-check on gsxt.gov.cn; confirm business scope, registered address, and validity |
| ISO 9001 or other quality management certificate | Confirm with the issuing body; check scope and validity dates rather than taking the certificate at face value |
| Product-specific certifications (FDA, CE, RoHS, etc.) | Verify each against the relevant issuing body or database |
| Social compliance audit reports (BSCI, Sedex, SMETA, etc.) | Review for recency and scope; note that these are working-condition assessments, not product quality certifications |
| Factory layout or floor plan | Keep it to compare against what you see on the day |
| Organization chart | Understand reporting lines, especially whether QC sits under production |
| Equipment list | Compare against what you observe on the floor |
| Recent production schedule | Gauge utilization and whether your order would realistically fit |
| Export records or bills of lading | Check export experience, particularly to your market |
Treat every document as a starting point for questions, not a conclusion. A certificate that checks out tells you the factory once met a standard on paper; it says nothing about how the line runs today.
Production Floor Inspection Checklist
The floor is the heart of the audit. This is where claims meet reality.
Equipment and Capacity
| Checkpoint | What to look for |
|---|---|
| Machine types and quantity | Match against the equipment list; note brands, age, and condition |
| Maintenance records | A real maintenance schedule with recent entries, not a blank logbook |
| Current activity | Are machines running, workers present, products moving down the line? |
| Capacity utilization | How many lines are active? Obvious idle equipment or overcrowding both tell you something |
| Tooling and mold storage | Organized, labeled, with maintenance records — this also bears on who owns your tooling |
| Spare parts inventory | Evidence of planned maintenance rather than scrambling for repairs |
Idle capacity isn't automatically a red flag, and a packed floor isn't automatically reassuring. What you're judging is whether the activity you see is consistent with a factory that could take your order without cutting corners on someone else's.
Production Process
| Checkpoint | What to look for |
|---|---|
| Work instructions at stations | Are operators following documented procedures, or working from memory? |
| Production flow | Does the layout move logically: raw material → processing → assembly → QC → packaging? |
| In-process quality checks | Are there checks between stages, or only at the end? |
| Rework and scrap handling | Is there a designated area? How much rework is sitting around? |
| Line changeover | How does the factory switch between products, and how disruptive does it look? |
A pile of rework near a station isn't proof of failure — every factory has some. But a large, casually managed rework area suggests the process upstream isn't holding, and that tends to show up later in your shipment.
Facility Condition
| Checkpoint | What to look for |
|---|---|
| Cleanliness and organization | Cluttered and dirty, or maintained and orderly? |
| Lighting and ventilation | Adequate for the precision your product needs? |
| Safety equipment | Fire extinguishers, marked exits, first aid — present and accessible? |
| Worker safety gear | Gloves, masks, eye protection where the work calls for it? |
| Chemical and material storage | Labeled, ventilated, separated from production? |
Quality Control System Checklist
A factory can own a thick QC manual and still ship defects. The point of this section is to test whether the system is operating, not whether it exists.
QC Documentation
| Checkpoint | What to verify |
|---|---|
| QC manual or quality policy | Accessible and used — not a framed certificate gathering dust |
| Incoming material inspection procedures | Documented and showing recent activity |
| In-process inspection records | Dated, signed, with actual measurements — not rows of identical checkmarks |
| Final inspection records | For recent shipments; look for consistency across them |
| Non-conformance and corrective action records | Evidence that problems get logged and acted on |
| Calibration records | Current and traceable for measurement equipment |
| Customer complaint records | Present, with some sign of how the factory responded |
Records that all look identical, are signed by one person, or stop abruptly a few months back are worth probing. Falsified or back-filled records are more telling than no records at all.
QC Lab or Inspection Area
| Checkpoint | What to look for |
|---|---|
| Testing equipment | Relevant to your product — calipers, durometers, tensile testers, and so on |
| Calibration stickers | Current, from a recognized provider |
| Sample retention | Are reference samples from past orders kept? |
| Inspection lighting | Bright enough, color-corrected where visual inspection matters |
| AQL sampling tables | Inspectors should be able to say which standard they work to |
QC Staff
| Checkpoint | What to ask |
|---|---|
| Team size and reporting structure | How many QC staff, and do they report to production or independently? |
| QC manager background | Relevant experience, certifications, or training records |
| Inspector-to-line ratio | Is coverage realistic for the number of active lines? |
Where QC reports matters more than buyers often assume. If the QC manager answers to the production manager, there's pressure to pass borderline goods to keep the schedule moving. Independent reporting doesn't remove that pressure, but it changes the incentives.
Material Traceability Checklist
Traceability means knowing where your materials came from and being able to follow a finished unit back to its material batch. For food-contact, medical, or children's products, this tends to be a regulatory requirement rather than a nice-to-have.
| Checkpoint | What to verify |
|---|---|
| Receiving records | Supplier name, date, batch number, quantity |
| Supplier material certificates | On file and current for critical materials |
| Storage labeling | Batch numbers visible and matching the receiving records |
| Batch tracking | Can the factory trace a finished product back to a raw material batch? |
| Segregation | If both certified and non-certified materials are used, are they physically separated? |
| Subcontractor traceability | If plating, coating, or heat treatment is outsourced, can those batches be traced too? |
If a factory cannot show where your materials come from, you cannot prove what your product is made of. For regulated goods, that single gap is often enough to step away from a supplier, regardless of how everything else looks.
Worker and Process Observations
Some of the most useful signals don't appear in any document. Walk the floor and watch:
- Pace and morale — rushed, visibly stressed workers make more mistakes. A line running at an unsustainable speed usually produces quality problems eventually.
- Training — can workers reach their instructions? Can an operator explain what they're checking and why?
- Turnover — high turnover tends to mean inconsistent output. Ask about average tenure on the lines that would run your product.
- Shift structure — how many shifts, how many hours? Heavy overtime correlates with quality slips.
- Language fit — if instructions are posted in one language and the workers read another, the procedures may not actually be followed.
These reads are subjective, and you should treat them that way. But a floor that feels chaotic or strained will often produce inconsistent quality no matter how good the QC manual reads.
Photo and Video Evidence
The documentation you leave with can matter as much as the audit itself. Months later, when you're comparing suppliers or pushing back on a problem, your notes and memory won't carry the weight that photos will.
What to photograph:
- Building exterior with the company sign or address visible
- The production floor from several angles, showing layout
- Machines relevant to your product, with nameplates legible
- Raw material storage with labeling
- The QC inspection area and its equipment
- Finished goods warehouse
- Anything that concerns you — damaged equipment, cluttered zones, safety issues
- The business license on display, if present
- Certifications on display, for later verification with issuing bodies
What to record on video:
- A walkthrough of the full flow, receiving to shipping
- Machines actually running and producing
- QC inspectors performing checks, with an explanation of what they're testing
- The packaging area and process
A few rules on evidence:
- Take more than you think you need. Storage is cheap; a second trip isn't.
- Include something for scale in close-ups.
- Shoot so that someone who wasn't there could form their own judgment.
- If you're using a third-party inspector, ask for original, unedited photos up front.
Audit Report Interpretation
Reading the report well is its own skill. The temptation is to glance at the score and move on, which is where buyers get into trouble.
| Report element | How to read it |
|---|---|
| Overall score or rating | Useful for comparison, weak on its own — a 75/100 factory might suit simple parts and fall short for precision work |
| Major non-conformances | Issues touching quality, safety, or compliance; these generally need resolving before you place an order |
| Minor non-conformances | Worth improving but not immediate threats — log them for follow-up |
| Observations | Neutral findings, neither good nor bad, but useful context |
| Photographic evidence | Review every image; don't rely on the inspector's selection. Ask whether this looks like a place you'd want your product made |
What a report does not do:
- It doesn't promise future quality — it captures one moment in time.
- It doesn't predict how the factory behaves under schedule pressure.
- It doesn't confirm your specific order will be produced at the facility you audited.
A clean report is a genuinely good signal. It isn't a warranty. Pair it with pre-shipment inspection to check what comes off the line during your actual production run.
Factory Audit Quick Checklist
Copy this for your own audit:
Pre-Audit
- Business license cross-checked on the government database
- Claimed certifications verified with issuing bodies
- Equipment list and floor plan requested
- Audit scope and checklist shared with your auditor or inspection company
Production Floor
- Equipment matches the claimed list; machines operational
- Work instructions visible at stations
- In-process QC checkpoints observed
- Facility clean, organized, adequately lit
- Safety equipment present and accessible
- Worker safety gear in use where appropriate
Quality Control
- QC documentation exists and shows recent use
- Testing equipment present and calibrated
- AQL sampling or equivalent procedure in use
- Non-conformance records show real problem tracking
- QC reports independently from production
Materials
- Receiving records maintained
- Supplier material certificates on file
- Batch traceability demonstrated, material to finished product
- Certified and non-certified materials segregated where both are used
Evidence
- Building exterior photographed
- Production floor photographed from multiple angles
- Key machines photographed with nameplates visible
- QC area and equipment photographed
- Video walkthrough recorded
- All concerns documented with photos
Audit Results Interpretation
| Finding Type | Example | Buyer Action |
|---|---|---|
| Green — acceptable | Business license valid and active; equipment matches claimed list; QC records are recent and signed; material traceability demonstrated; facility is clean and organized | Proceed with order subject to standard pre-shipment inspection |
| Yellow — needs attention | Some QC records are missing; a claimed certification has expired; worker safety gear is inconsistent; material batch tracking is partial for some products | Request corrective action plan with timeline; verify fixes before ordering; consider re-audit of specific areas |
| Red — serious concern | Business license cannot be verified; major equipment missing or non-operational; no QC system in place; materials are uncertified with no traceability; safety violations; facility appears staged or not operational | Do not place order; if this is your only supplier option, a full re-audit after documented corrections is the minimum — but consider finding an alternative |
Audit Scope By Product Risk
| Product Category | Audit Depth | Key Focus Areas |
|---|---|---|
| Simple non-regulated products (generic housewares, basic textiles, simple metal parts) | Standard audit | Production capability, basic QC, facility condition |
| Custom tooling products (injection-molded parts, die-cast components, custom metal fabrication) | Standard audit + tooling review | Above plus: mold/tooling workshop, tooling maintenance, design capability, material sourcing for tooling |
| Electronics and electrical products | Standard audit + electrical safety focus | Above plus: testing equipment, certification documentation (CE, FCC, UL), ESD protection, component sourcing and traceability |
| Plastic, silicone, and rubber products | Standard audit + material focus | Above plus: material certification verification, curing process documentation, food-grade claims verification if applicable, mold maintenance records |
| Food-contact products, kitchenware, baby products | Deep audit | Above plus: material traceability to batch level, food-grade certification verification (FDA, LFGB, EU 1935/2004), factory hygiene, pest control, contamination prevention |
| Medical devices, safety-critical components | Deepest audit | Above plus: ISO 13485 verification, cleanroom conditions, sterilization validation, biocompatibility documentation, regulatory submission history, design control procedures |
Corrective Action Plan After the Audit
An audit identifies issues. A corrective action plan (CAP) addresses them. After receiving an audit report with yellow or red findings, the supplier should provide a CAP that covers:
What a corrective action plan should include:
- Specific issue: Each finding from the audit report, referenced by finding number.
- Root cause: The supplier's analysis of why the issue exists — not just a surface fix.
- Proposed correction: What will be done, by whom, and by when.
- Evidence of completion: A photo, document, or record demonstrating the correction was made.
- Preventive measure: What will change in the system to prevent recurrence.
When to re-audit:
- Red findings: re-audit after the supplier provides evidence of correction. Do not place an order before the re-audit confirms the fix.
- Multiple yellow findings: consider a focused re-audit of the affected areas rather than a full audit.
- Green findings only: re-audit annually or before a significant new order as part of ongoing supplier management.
When a desktop review is enough: For minor yellow findings with clear documentary evidence (e.g., an expired certificate that has been renewed, a missing record that has been located), a desktop review of the submitted evidence may be sufficient. For physical findings (equipment condition, facility issues, QC practice), a desktop review is not enough — verify on site.
When to pause a project:
- The supplier cannot or will not provide a CAP within a reasonable timeframe (typically 2–4 weeks).
- The CAP addresses symptoms but not root causes.
- The same issues recur in a follow-up audit.
- The supplier disputes findings without providing counter-evidence.
A passed audit does not replace pre-shipment inspection. An audit confirms capability. An inspection confirms that a specific production batch meets specifications. Both are needed for a complete quality assurance system.
A note on compliance: BSCI, Sedex, and similar social compliance audits are assessments of working conditions and social responsibility — they are not product certifications and do not verify product quality or safety. Product test reports, quality management certificates (e.g., ISO 9001), and social compliance audits serve different purposes and should be evaluated separately. Regulatory requirements vary by product category and destination market. Buyers should verify requirements with qualified testing laboratories, compliance advisors, or the relevant issuing bodies for their specific product and market. This guide does not constitute legal or compliance advice.
FAQ
What should be included in a comprehensive China factory audit?
A full audit covers pre-audit document verification, production floor inspection, QC system assessment, material traceability, worker and process observation, and thorough photo and video documentation. Each area works best with a structured checklist and specific criteria rather than a general impression.
What documents should I check before auditing a Chinese factory?
Request the business license (cross-checked on gsxt.gov.cn), quality management and product-specific certifications (each verified with the issuing body), an equipment list, floor plan, organization chart, recent production schedule, and export records. These establish what the factory claims so the audit can confirm or contradict it.
What should I look for on a Chinese factory production floor?
Watch for machines actually running, work instructions at stations rather than workers relying on memory, in-process QC checkpoints, a logical material flow, maintenance records, and general order. A cluttered, chaotic floor tends to correlate with inconsistent output.
What QC systems should a Chinese factory have in place?
Look for documented inspection procedures that are actually used, incoming material checks, signed in-process records with real measurements, final inspection records, non-conformance tracking, calibrated equipment, and a QC team that reports independently from production. The system existing on paper isn't the same as it operating day to day.
How do I verify raw materials during a Chinese factory audit?
Check receiving records with supplier names and batch numbers, supplier certificates for critical materials, storage labeling that matches those records, and whether a finished unit can be traced back to its material batch. For regulated products, also confirm certified and non-certified materials are physically separated.
What evidence should I collect during a factory audit?
Photograph the exterior, the floor from several angles, machines with nameplates, material storage, the QC area, and any concerns, plus a video walkthrough of the full flow. Aim for evidence that would let someone who wasn't present form their own judgment of the factory.
How should I interpret a Chinese factory audit report?
Look past the headline score. Major non-conformances generally need resolving before you order; minor ones go on a follow-up list. Review every photo yourself rather than the inspector's selection, and ask whether this is a place you'd want your product made.
Can a factory audit prevent quality problems in production?
An audit reduces the probability of problems by surfacing systemic weaknesses, but it doesn't eliminate them. A factory that audits well can still ship defects under schedule pressure, with a different crew, or after substituting materials. Pairing the audit with pre-shipment inspection covers more of that gap.
What are the limitations of a one-time factory audit?
A single audit is a snapshot. It won't show how the factory performs under a tight deadline, whether quality holds across shifts, or how standards drift between visits. For ongoing relationships, periodic re-audits combined with production inspections give a fuller picture.
Should I tell the factory I am coming before the audit?
For a scheduled third-party audit, usually yes — the factory needs to be open with the right people available. An unannounced visit can give a more realistic picture, so some buyers run a scheduled initial audit and follow up with occasional unannounced checks coordinated through their inspection company.
How many photos and videos should an inspector take?
More than feels necessary. A thorough audit often produces 50 to 100-plus photos across every area, plus a walkthrough video of several minutes. The cost of missing evidence later far outweighs the cost of extra storage.
What score or rating indicates a factory is acceptable?
There's no universal threshold — it depends on your product. A factory around 70/100 might suit simple, non-regulated goods, while precision or safety-critical work usually calls for a higher bar. Read the detailed findings rather than leaning on the number alone.
Disclaimer: This checklist reflects common factory-auditing practices as of 2026. It is not a substitute for a professional audit conducted by a qualified inspector familiar with your product type and industry standards. Audit results capture a moment in time and do not predict future performance. Conduct due diligence appropriate to your product's risk profile and regulatory requirements.