Most factory audits happen at the worst possible moment: after a container lands with a defect rate nobody budgeted for, when the tooling is paid and the launch date is fixed. An audit before the first purchase order costs a fraction of that, and much of it can be done from your desk.
Stage one: the desk audit
Ask for scans and read them properly rather than glancing at the letterhead.
- Business licence and registered scope. The scope is the part buyers skip: it should describe manufacturing of the relevant goods. If it reads only as wholesale or import and export, you are talking to a trading company whatever the website says.
- How long the entity has existed. Not the brand, the legal entity. A new company number behind a story about decades of experience deserves a question. Sometimes it is a restructuring; sometimes a supplier that failed and reopened.
- Owned or rented premises. Neither disqualifies, but a workshop on a short lease can relocate between sample approval and production, taking your tooling with it.
- Export records. A real exporter talks fluently about markings, declarations and destination paperwork. One supplying domestically through an intermediary cannot.
- Does the company you pay make the goods? Compare the names on the quotation, the proforma invoice, the bank beneficiary and the licence. Divergence is not always sinister, but you should know who is on the hook when a claim arises.
The trading company trap
The classic trap is an intermediary presenting as a factory, using borrowed photographs of somebody else’s floor. The cheapest test is a live video call: ask them to walk the line while you watch, then ask process questions only a maker can answer. What pre-treatment runs before the powder booth? What wall thickness and temper is that tube? At what bend radius does it kink? Who does the swaging?
An intermediary defers to “the engineer” and comes back tomorrow. A factory answers immediately, and often argues with your assumptions. That argument is a good sign.
What the certificates actually tell you
Each certificate answers a narrow question. The common error is treating a factory-level certificate as evidence about a product.
| Certification | What it covers | What it does not tell you |
|---|---|---|
| ISO 9001 | A quality management system: documented processes, batch traceability, records, a formal corrective-action loop. | Whether your product is good. It proves a system exists, not the level it is set to hold. |
| SA8000 | Social accountability: working hours, wages, health and safety, no forced or child labour, freedom of association. | Anything about technical capability. Increasingly a buyer requirement rather than a differentiator. |
| BSCI / Sedex-SMETA | Social compliance audit programmes written into many European and UK retailers’ supply chain policies, often a precondition for listing. | These are dated audit reports with a grade, not permanent certificates. Check the date and the closed non-conformities. |
| Product test reports (EN 581, BIFMA, chemical) | Performance of one tested configuration: that frame, that fabric, that joint, to a stated standard and level. | They expire and do not transfer to another model, a substituted fabric or a changed tube gauge. ISO 9001 says nothing about whether your chair passes EN 581. |
Two habits worth adopting: verify certificate numbers with the issuing body rather than accepting a PDF, and read the scope of any test report to confirm the model and materials match what you are buying. We manufacture under ISO 9001 and SA8000, and handle test reports per model and per configuration.
What to look at on the floor
If you cannot travel, ask for one continuous video walk of the route rather than clips. You want the chain, not the highlights.
- Cutting and tube bending. Cut ends square and deburred; bend consistency across a batch; a stated first-article check on the bender.
- Welding and swaging. Uniform beads, no burn-through on thin wall, fixtures rather than freehand jigs. Swaged joints are where a folding frame quietly loses rigidity.
- Powder coating and its pre-treatment stage. The booth is the photogenic part; the pre-treatment tanks and drying oven decide whether coating survives salt and UV. Parts going straight from storage into the booth will not reproduce the report’s adhesion figures.
- Sewing. In-house or subcontracted? In-house means fabric problems get fixed the same day.
- Assembly and packing. Watch a unit assembled and boxed: here you see whether function checks happen or the stamp is applied by habit.
Write down which steps are subcontracted. That is where control is weakest and lead time slips first.
Quality system evidence to ask for
Ask for records, not policies. A policy document proves someone owns a printer.
- Incoming material inspection records for tube, fabric and fittings, traceable to a supplier batch.
- Signed, dated in-process check sheets from a real run.
- Function inspection before packing, with a defined list of what is checked.
- Open-close checks in QC for any folding mechanism, with the sampling rate stated.
- A written AQL sampling standard for final inspection, with the levels used.
- A corrective-action record for a real past defect: what failed, root cause, what changed, evidence it did not recur.
That last item is more revealing than any certificate. Every factory has had defects; one that shows a real example and points to the process change is running a genuine system. One that claims none has a filing problem.
Capacity and continuity
- How many lines can run your product, and what is the changeover time between models?
- When your order collides with peak season, whose order moves? Ask directly.
- Is raw material stocked or bought per order? Stock shortens lead time; per-order buying exposes you to the aluminium market and your supplier’s credit terms.
- What is the holiday shutdown pattern and the realistic ramp-up afterwards?
Category depth matters too. If a supplier builds one product type, every adjacent item becomes another audit and another shipment. Our storage and utility range shares bending, welding and coating with chairs and tables, so a rack like the Three-Tier Aluminium Storage Rack is audited in the same walk as the rest of a programme.
The reusable checklist
| Stage | Ask for | Red flag |
|---|---|---|
| Legitimacy | Business licence, registered scope, establishment date | Trading-only scope; entity younger than the claimed history |
| Identity | Quotation, invoice, bank and licence names matched | Payment to an unrelated entity, unexplained |
| Premises | Ownership or lease term; live walk of the full line | Photos only; a walk that jumps cutting to packing |
| Systems | ISO 9001 number verified with the issuing body | PDF only; expired; scope excludes your product family |
| Social | SA8000, BSCI or SMETA with non-conformities closed | Report older than your retailer’s required cycle |
| Product | Test report matching your exact model and materials | A similar model’s report offered as proof for yours |
| Quality | Incoming, in-process and pre-packing records; AQL standard | Policies without records; no stated AQL level |
| Improvement | One real past defect with root cause and fix | “We have never had a quality problem” |
| Capacity | Line count, peak priority, stocking, shutdown dates | Vague answers; refusal to name a constraint |
When to bring in a third party
- Initial supplier audit. A full on-site assessment of systems, capability and social compliance. Worth it before a first PO with a supplier you cannot visit.
- During-production inspection. Run when part of the order is complete. Buyers skip it and later regret it: this is the last point at which a systematic defect can be corrected without reworking the whole order.
- Pre-shipment inspection. AQL sampling on finished, packed goods. Necessary, but it only tells you whether to ship. It cannot fix anything.
For a repeat supplier with a clean record, pre-shipment alone is usually proportionate. For a new supplier, or a new product family with an existing one, add the during-production visit. Anything with a folding mechanism, such as a Three-Tier Folding Storage Rack or a Camping Fridge Rack, benefits most, because hinge and latch problems repeat across every unit once the setup is wrong.
A good factory welcomes an audit, and the questions usually improve the specification. Reluctance or a sudden scheduling problem is itself an audit result. We have manufactured since 1995 in a 9,000 m² facility, hold ISO 9001 and SA8000, and have built for 300+ brands, with 50+ registered R&D and design patents and six Good Design (G-Mark) awards behind the work. If you want to test that, send us your spec or drawing and we will arrange a live walk of the relevant line alongside the quotation.
Frequently asked questions
How can I tell if a supplier is a factory or a trading company?
Start with the business licence. The registered scope should describe manufacturing, not only wholesale or import and export. Then request a live video walk of the production line rather than photographs, and ask process questions during it: pre-treatment before the powder booth, tube wall thickness and temper, bend radius limits, who performs swaging. A maker answers on the spot; an intermediary promises to check with an engineer.
Does ISO 9001 mean the products will pass EN 581?
No. ISO 9001 certifies a quality management system: documented processes, traceability, records and corrective action. It says nothing about the performance of a specific product. EN 581 and BIFMA results attach to a tested configuration, so the report must name your model, materials and dimensions. Reports also expire, and a substituted fabric or changed tube gauge invalidates them.
What should I ask to see during a factory audit that most buyers miss?
A corrective-action record for a real past defect: what failed, the root cause analysis, what changed in the process, and evidence it did not recur. Every factory has had defects, so a supplier that can show one and discuss it without defensiveness is running a working system. Also ask which production steps are subcontracted, because control and lead time are weakest there.
Is a third-party inspection worth it if the factory is already certified?
Certification covers systems and social compliance, not the batch you are buying. For a repeat supplier with a clean record, a pre-shipment inspection with an agreed AQL standard is usually proportionate. For a new supplier or a new product family, add a during-production inspection. That is the last point at which a systematic defect can be fixed without reworking the entire order.