The gap between "the sample was excellent" and "the bulk shipment arrived damaged or inconsistent" is where many importers lose money. Structured quality control closes that gap.
In this guide: the three inspection points, what inspectors actually check, and the AQL statistical sampling method.
The Three Common Inspection Points
| Inspection Type | Timing | Purpose |
|---|---|---|
| Pre-production inspection | Before manufacturing begins | Verify raw materials and components |
| During-production inspection | While manufacturing is underway | Catch problems early on large orders |
| Pre-shipment inspection | After production is complete, before the container is sealed | The last checkpoint before goods leave China |
Many importers skip pre-shipment inspection to save a small fee — a decision that's extremely costly compared to the cost of a fully rejected shipment.
What Inspectors Actually Check
A good inspection verifies quantity against the packing list, tests the product's dimensions and function against agreed specifications, examines a statistical sample rather than every unit, and reviews packaging integrity for the journey ahead — particularly important for sea freight to the Gulf, where humidity and handling take a toll on packaging.
The AQL Sampling Method, Simply Explained
Most inspections rely on the "Acceptable Quality Limit" (AQL) method: instead of inspecting every unit, a statistically valid sample size is checked, and the shipment is accepted or rejected based on the defect rate found in that sample. This is an internationally recognized method, not an unreliable shortcut.
Make Inspection Part of the Standard Process
The most reliable importers treat inspection as a standard step for every order above a certain value, not an occasional precaution reserved for suppliers they don't already trust.
FAQ
Is every product in a shipment inspected?
No, a statistical sampling method (AQL) is typically used, checking a defined number of units rather than the full shipment — an internationally accepted, time-efficient approach.
When should inspection happen?
Ideally right before the container is sealed (pre-shipment inspection), since it's the last chance to correct an issue before goods leave China.
Is inspection necessary even with a previously trusted supplier?
Yes — fluctuations in raw materials or staff turnover at the factory can affect quality even with suppliers you've worked with before.
Keerki Limited Manages This For You
The Keerki Limited team arranges pre-shipment inspections, and sometimes conducts them in person, for our clients in Saudi Arabia, Qatar, and the UAE — checking automotive spare parts, consumer products, and cleaning products against agreed specifications before any container leaves Guangzhou. Contact us to request an inspection for your next shipment.