Inspection planning guide
Quality control checklist for China sourcing and AQL
A quality control checklist gives buyers and inspectors the same standard before goods leave the supplier. For China sourcing, the checklist should connect the approved sample, product specification sheet, packaging rules, AQL plan, and shipment documents.
QC checklist checkpoints
| Term | What it means | Buyer check |
|---|---|---|
| Approved sample | Reference sample, approved photos, change notes, and buyer sign-off used as the production comparison standard. | Inspection is weak if the inspector does not know which sample version is final. |
| Product checks | Material, dimensions, tolerance, color, finish, workmanship, function, accessories, and required tests. | Tie every product check back to the product specification sheet. |
| AQL and defects | Sampling size, acceptance limits, critical defects, major defects, minor defects, and rework rules. | Write defect rules before production so failed inspections do not become negotiations from scratch. |
| Packaging checks | Retail pack, inner pack, master carton, carton marks, barcode, warning label, language, artwork, and protection. | Packaging errors often create receiving, retail, or marketplace problems even when the product works. |
| Shipment documents | Packing list, invoice, carton count, gross weight, net weight, HS code support, and destination requirements. | Document mismatch can delay freight, customs, or warehouse receiving. |
Start the checklist before production
Quality control is not only a final inspection. Buyers should define the China inspection checklist before the supplier starts mass production so samples, materials, packaging, and shipment data are all aligned.
- Attach the product specification sheet and approved sample photos to the inspection brief.
- Define which defects are critical, major, and minor before the inspector visits.
- Agree what happens after a failed inspection: rework, re-inspection, discount, or shipment hold.
Inspect product, packaging, and documents together
A shipment can fail commercially even when the product itself passes. The checklist should include carton labels, packaging artwork, quantities, barcode, and document consistency so receiving teams do not inherit hidden issues.
- Check product count, inner box count, master carton count, and packing list consistency.
- Verify barcode, warning labels, carton marks, and retail packaging against the buyer file.
- Record photos of defects and carton conditions so the supplier can understand required rework.
Use inspection results to improve repeat orders
The first checklist should become the baseline for the next order. Track repeated defects, weak packaging points, and late document issues so the reorder file gets cleaner over time.
- Add recurring defects to the next product specification sheet.
- Keep inspection reports with supplier scorecards and reorder decisions.
- Adjust sampling level when the supplier's defect history changes.
Buyer FAQs
What is included in a quality control checklist?
A quality control checklist includes approved sample comparison, product measurements, function checks, workmanship, packaging, labels, carton marks, quantity, defect classification, AQL sampling, and document review.
When should China sourcing buyers create the QC checklist?
Create it before mass production. The checklist should be part of the PO, sample approval, and inspection brief so suppliers know the pass/fail standard early.
What are critical, major, and minor defects?
Critical defects create safety, legal, or unusable-product risk. Major defects hurt normal sale or use. Minor defects are visible but usually do not stop sale if they stay within the agreed AQL limit.