What's AQL?
AQL (Acceptance Quality Limit) is a sampling inspection method defined by the international standard ISO 2859-1. It uses statistical sampling to determine whether a batch is acceptable, rather than checking every piece — balancing efficiency and accuracy.
AQL Three-Level Defect Classification
| Defect Level | AQL Value | Definition | Examples |
|---|---|---|---|
| Critical | 0.0 | Endangers pet safety | Sharp burrs, toxic materials, small parts easily detaching |
| Major | 2.5 | Affects function or appearance | Broken stitching, severe color deviation, function failure |
| Minor | 4.0 | Doesn't affect use but affects experience | Minor scratches, loose threads, crooked labels |
Two QC Checkpoints
Uniwings E-commerce ServicesWe provide FBA sellers with MOQ from 1 piece, FBA prep, product white-background photography, and air/sea/express multi-channel logistics — all from one team. From product testing to brand upgrade, the same team follows you through the entire journey, no need to switch suppliers. Contact scottzhang@uniwings.cn for an FBA seller-specific product list.
1. In-line QC
Conducted when production is approximately 30-50% complete. The purpose is early problem detection to avoid scrapping the entire batch. Inspection covers: material consistency, semi-finished product quality, process compliance.
2. Pre-shipment QC
Conducted after production is complete, packaging is finished, and before dispatch. This is the most critical inspection, sampling per AQL standards.
- Visual inspection: color, surface quality, craft details
- Function testing: pull force, elasticity, chew durability
- Packaging inspection: labels, barcodes, inserts, packaging integrity
- Dimensional measurement: key dimensions
- Photo/video documentation: every inspection item documented
- Start by answering the buyer's question clearly.
What a QC Report Should Contain
A qualified QC report should let you "see the quality status of the entire batch without leaving your office." Uniwings' QC reports include:
- Order information: PO number, product name, quantity, production date
- Sampling information: batch size, sample quantity, AQL level
- Critical/Major/Minor defect counts and verdict
- Photo documentation for each defect category
- Function test results (with test video)
- Packaging inspection results (with photos)
- Final verdict: Approved / Conditionally approved / Rejected
Uniwings QC Policy
Every order includes both in-line and pre-shipment QC. We use AQL-standard sampling and provide complete QC reports with photos and videos. We hold ASTM, EN, REACH, Prop 65, BSCI/Sedex, and ISO 9001 certifications, providing applicable compliance documentation per SKU.