Quality Control Inspections in China: AQL, Pre-Shipment Checks and What They Cost
Short answer
A pre-shipment inspection checks a random sample of your finished, mostly packed goods before the balance is paid and the goods leave the factory. Inspectors use AQL (acceptable quality limit) sampling under the ISO 2859-1 standard; a common setting for consumer products is 0 critical, 2.5 major and 4.0 minor. Third-party inspections are usually priced per inspector-day, often a few hundred US dollars, which is small insurance compared with a container of defective stock.
Key takeaways
- ✓Make the balance payment conditional on passing inspection.
- ✓Define defects in writing, with photos, before production starts.
- ✓Inspect when at least 80% of goods are finished and packed.
- ✓A failed inspection is a negotiation tool: rework, replace or discount before shipping.
What types of inspection are there?
| Inspection | When | Best for |
|---|---|---|
| Factory audit | Before you order | Checking a new supplier is real and capable |
| Pre-production (PPI) | Before production starts | Checking materials and components |
| During production (DUPRO) | About 20 to 60% complete | Catching problems early on large or custom orders |
| Pre-shipment (PSI) | 80% or more finished and packed | Every order, especially the first |
| Container loading check | While loading | Making sure the right goods and quantities ship |
What does AQL mean in plain language?
Inspectors cannot check every unit, so they check a statistically chosen sample based on your order size. AQL sets how many defects in that sample are acceptable before the whole lot fails. Defects are graded: critical (unsafe or illegal), major (customer would likely return it) and minor (small cosmetic issues). For example, an order of 3,000 units at general inspection level II means checking 125 units; at AQL 2.5 for major defects, the lot passes with up to 7 major defects in that sample.
What does an inspector check?
- Quantity, packing and carton markings.
- Appearance and workmanship against the golden sample.
- Dimensions, weight, colour and logo accuracy.
- Function and safety tests relevant to the product.
- Barcode scans, labels and instructions.
- Carton drop tests for transit damage.
What if goods fail inspection?
- Read the report and photos to understand which defects and how many.
- Ask the factory to sort and rework, then book a re-inspection.
- If rework is not possible, negotiate replacement or a discount.
- Never pay the balance until the outcome is agreed in writing.
Why inspection protects your marketing too
Defects do not just cost refunds; they cost reviews. Research on negativity bias shows bad experiences weigh more heavily than good ones, and early negative reviews can sink a new product's conversion rate. Paying for inspection is paying to protect your launch.
How Husbar helps
In China Line, inspections are built into the plan and the balance is only released after goods pass. With Husbar's China Line, we find and verify the supplier, negotiate price and terms on your behalf, arrange samples, inspection and shipping, then market the product in the UAE, Saudi Arabia or Pakistan. You own the brand; we do the heavy lifting. Browse the Suppliers Directory or tell us what you want made.
Frequently asked questions
What is AQL 2.5?+
It is an acceptable quality limit used for major defects: based on the sample size for your order, it sets the maximum number of major defects allowed before the lot fails.
How much does a pre-shipment inspection cost in China?+
Third-party inspections are usually priced per inspector-day, commonly a few hundred US dollars plus any travel costs.
When should a pre-shipment inspection happen?+
When at least 80% of the order is finished and packed, before the balance is paid.
Can the supplier do its own quality control?+
Factories have their own QC, but an independent inspection working for you is far more reliable.
Sources
- ISO 2859-1:1999. Sampling procedures for inspection by attributes.
- Baumeister, R. F., et al. (2001). Bad is stronger than good. Review of General Psychology, 5(4).
Team Husbar
Husbar Editorial
Team Husbar is the strategy, psychology and research team at Husbar, a psychology-led growth agency headquartered in Dubai. Together we have worked with 100+ brands over 10+ years.
Want this applied to your brand?
We will find the psychology behind your lost sales and show you what to fix first.
Book a Growth AuditKeep reading
Sourcing & Import
How to Find a Reliable Supplier in China: A Step-by-Step Guide for New E-commerce Brands
Sourcing & Import
Alibaba vs 1688 vs Made-in-China vs Global Sources: Which Sourcing Platform Should You Use?
Sourcing & Import
How to Verify a Chinese Supplier and Avoid Scams: 12 Checks Before You Pay