Quality control
Catch quality problems in China — not in your warehouse.
Independent inspections at every stage of production, based on international AQL standards, with a detailed photo report within 24 hours.
- Report delivery
- Within 24 hours
- Standard
- ANSI/ASQ Z1.4 · ISO 2859-1
- Coverage
- All major manufacturing regions
Inspection services
Inspections for every stage of production
Choose individual inspections or a complete quality program for each order.
Pre-Production Inspection (PPI)
We verify raw materials, components and the factory’s readiness so production starts right.
- Raw material and component check
- Golden sample comparison
- Production plan and capacity review
During Production Inspection (DUPRO)
Catch defects early while there’s still time to correct them on the production line.
- Random sampling from the line
- Workmanship and assembly check
- Corrective action follow-up
Pre-Shipment Inspection (PSI)
Our most popular service — a final AQL inspection before you pay the balance.
- AQL sampling of finished goods
- Function, safety and dimension tests
- Packaging, labeling and carton drop test
Container Loading Supervision
Make sure the right products, in the right quantity, are loaded and sealed properly.
- Quantity and carton count
- Container condition check
- Seal number recording and photos
Piece-by-Piece Inspection
100% inspection and sorting when every unit matters.
- Every unit checked against specs
- Defective units separated and reworked
- Labeling of inspected goods
Lab Testing
Third-party lab testing for regulatory and retailer compliance.
- CPSIA, ASTM F963, Prop 65
- FDA / LFGB food contact
- Reach, RoHS, UL and FCC testing
What we check
A thorough, standardized checklist
Every inspection follows a checklist built from your specifications, approved sample and the standards for your market.
- Quantity and assortment
- Workmanship and appearance
- Dimensions and weight
- Function and performance
- Safety and electrical tests
- Color and material match
- Labels, barcodes and markings
- Packaging and carton drop test
| Inspection type | Pre-shipment (PSI) |
| Sampling level | General Level II |
| Lot size / sample size | 3,200 / 200 |
| Critical defects (AQL 0) | 0 / 0 |
| Major defects (AQL 2.5) | 4 / 10 allowed |
| Minor defects (AQL 4.0) | 7 / 14 allowed |
| Photos in report | 120+ |
Understanding AQL
Recommended AQL levels
Acceptable Quality Limit (AQL) sets the maximum number of defects allowed in a random sample. These are the levels most US importers use.
| Defect type | Typical AQL | Examples |
|---|---|---|
| Critical | 0 (not allowed) | Safety hazards, sharp edges, electrical risk, regulatory non-compliance |
| Major | 2.5 | Function failure, wrong size, visible defects likely to cause returns |
| Minor | 4.0 | Small cosmetic flaws that don’t affect use or sale |
Book an inspection for your next order
Tell us the factory, product and ship date — we’ll confirm the inspection date within one business day.