When you buy consumer goods from China, the factory that makes your order is rarely the party that answers for its quality. Production is subcontracted, materials change between batches, and the line that ran your sample is not always the line that runs your bulk order. Quality control inspection is the discipline of verifying, at defined points in production and before shipment, that your goods match the approved specification, the agreed quantity and the compliance requirements of your destination market. It converts assumptions into records you can act on.
Mutual is a sourcing team based in Yiwu. Our Quality Inspection China service is a coordination function across your order: we coordinate the incoming, in-process and pre-shipment checks carried out by the executing inspection party, and we coordinate buyer-designated third-party inspection agencies such as SGS, Bureau Veritas, TÜV or Intertek, together with accredited (ISO 17025) laboratories, when your compliance programme requires them. We are not a testing laboratory and we do not issue certificates or test reports in our own name; laboratory reports are issued by the laboratory and carry its report number. The inspection plan, standards and AQL level are written into the order terms when the order is placed, so the acceptance criteria are agreed before production begins rather than negotiated after a defect appears.
The five-stage control chain
Quality control inspection works best as a chain rather than a single event at the end. Each stage catches a different class of problem, and the earlier a defect is caught, the cheaper the correction.
IQC - incoming materials
Before production, we check the raw materials and components the factory has received against the approved specification: material type, thickness or weight, colour, and component dimensions. Problems found here prevent an entire batch being built from the wrong input.
IPQC - in-process
During production, we check work in progress at agreed intervals to confirm the factory is holding to the approved method, measurements and assembly sequence. Drift is identified while it can still be corrected on the line.
PQC - first-piece
The first article produced is measured and compared with the pre-production sample and drawings. First-piece approval confirms the set-up is correct before volume output continues.
FQC - finished goods
Completed units are checked against the full specification, including function, finish and labelling. This is where shortfalls in workmanship are quantified against the sampling plan.
OQC - outgoing / pre-shipment
The final outgoing check is performed on packed goods before shipment, covering quantity, assortment, packaging, marks and the container loading condition. The final inspection report is sent to you for confirmation at least 3 days before shipment.
Three control points on every order
Every order carries a standard control rhythm. First, pre-production sample (PPS) confirmation: the factory's sample is signed off against your specification, and that approved sample becomes the reference for the whole order. Second, at least two in-production checks, timed to the production schedule so that early output and late output are both covered. Third, the final OQC before shipment, which is the last point at which a defect can be corrected without air freight, rework abroad or a customer complaint.
What inspectors actually check
The checklist is adapted per product category, but the core areas are consistent across orders.
| Check area | What is verified | Typical method |
|---|---|---|
| Appearance | Colour, finish, surface defects, cleanliness, print and logo accuracy against the approved sample | Visual inspection under standard lighting, comparison with the signed PPS |
| Dimensions & weight | Critical dimensions typically within +/-1-5 mm by category; gross weight deviation within +/-5% | Calibrated measuring tools, scale weighing of units and cartons |
| Function | Whether the product performs as specified in normal use | Zips cycled 500 times, handle load tests, drop tests, and category-specific functional checks |
| Quantity & assortment | Total units produced and packed, colour and size ratios, carton configuration | Count against the order and packing list, assortment verification per carton |
| Packaging & labelling | Inner and outer packaging, barcodes, shipping marks, warning text and language for the destination market | Physical check against the approved artwork and label file |
| Accessories & documents | Manuals, inserts, spare parts, tools and required paperwork included and correct | Item-by-item verification against the packing specification |
| Safety & compliance marks | Presence and correct form of required marks on product and packaging | Visual check against the destination market requirement for that product |
Category-specific checks
Beyond the core checklist, inspectors apply add-ons that match the risk profile of the goods.
- Toys: small-parts checks and EN71-related checks, including age marking and warning text.
- Textiles and apparel: colourfastness, pH, formaldehyde and azo dyes, with laboratory coordination where required.
- Hardware and tools: hardness, coating thickness and torque testing.
- Bags: handle load tests, zip cycling to 500 cycles, stitching and hardware attachment strength.
- Kitchenware: food-contact migration checks arranged through an accredited laboratory for the destination market.
Sampling and acceptance
Sampling follows ANSI/ASQ Z1.4 / ISO 2859-1. The standard acceptance level is AQL Major 2.5 / Minor 4.0, with stricter levels such as 0.65 or 1.0 available on request for higher-risk or higher-value goods. Critical defects, defined as safety hazards or regulatory violations, are not accepted at any AQL level: the shipment stops. Minor defects are handled by correction on site, repacking or relabelling. Major defects require rework, replacement of shortfalls and re-inspection before release. For critical findings, the batch is quarantined, a root-cause review is opened (8D, 5 Whys, CAPA), and the order is re-made or the supplier changed if the cause cannot be closed out.
Reporting you can audit
Each inspection produces a PDF report shared digitally, containing high-resolution photographs, video, a defect list with severity classification, corrective recommendations and re-inspection records. The final inspection report reaches you at least 3 days before shipment so you can confirm release or instruct corrective action. You may also follow inspections by live video. The response loop runs on a 24-48-7 rhythm: within 24 hours you receive photos, video and the defect list; containment and a correction plan follow; correction and re-inspection are targeted to complete within 48 hours to 7 days, subject to the factory's rework and the executing inspection party's re-inspection schedule; a re-inspection report with before-and-after comparison closes the case. Samples and records for every batch are retained for at least 12 months. Certificates available upon request.
FAQ
How much notice does an inspection need?
The inspection plan is agreed when the order is placed, so standards, AQL level and checkpoints are already written into the order terms. For scheduling, give us notice as soon as production dates are firm; requirement confirmation itself typically takes 1-3 days. Earlier notice allows the in-production checks to be timed to actual output rather than squeezed into the final week.
Can I use my own third-party agency instead?
Yes. You may designate an agency such as SGS, Bureau Veritas, TÜV or Intertek, and we will coordinate the booking, documentation and access to the factory on your behalf. We do not claim partnership, accreditation or affiliation with these agencies; they act under your instruction, and their reports are issued in their own name.
What happens if the goods fail?
Handling depends on defect severity. Minor defects are corrected on site, repacked or relabelled. Major defects trigger rework, replacement of shortfalls and re-inspection before release. Critical defects stop the shipment: the batch is quarantined, a root-cause review is opened, and the goods are re-made or the supplier is changed if needed. You receive the evidence and the correction plan within the 24-48-7 loop. For testing or compliance questions, contact [email protected].