Quality control is where sourcing agents earn their fee. You can find suppliers on Alibaba for free. What you're really paying for is someone to make sure what arrives in your container matches what you ordered.

Here's the exact inspection process we use for every shipment in our Guangzhou warehouse.

When to Inspect

There are three critical inspection points, not just one:

Pre-production inspection: Before manufacturing starts. Check raw materials, confirm specifications with the production manager, approve the first sample off the line. Catch problems before they're built into 5,000 units.

In-line inspection (During Production): Visit the factory while production is running โ€” usually at 20-30% completion. Check that production quality matches the approved sample. If there's a problem, you catch it early enough to fix it without delaying the whole order.

Pre-shipment inspection (Final): After production is complete, before the container is sealed. This is your last chance. Check the finished goods, count the quantities, verify packaging, and only then approve loading.

The Inspection Checklist

Quantity: Count everything. Not 'approximately 500' โ€” exactly 500. We've caught orders that were 10% short because the factory 'calculated by weight.'

Appearance: Color matching (use a Pantone book, not your eyes), surface finish (no scratches, consistent texture), printing and labeling (correct logos, correct spelling, correct placement).

Dimensions and Weight: Measure with calipers, not a tape measure. Weight on a calibrated scale. If your product spec says 15cm, reject anything outside 14.7-15.3cm.

Function: Test every feature on every sampled unit. If it's a lamp, does it turn on? Both brightness settings? Does the USB port work? Does it get too hot after 10 minutes?

Packaging: Is the retail packaging correct? Are barcodes scannable? Is the inner foam/protection adequate? Drop a packaged unit from waist height โ€” if it breaks, the packaging needs improvement.

Accessories: Manual in the correct language? Charger included and correct plug type? All parts listed on the box actually in the box?

Acceptable Quality Level (AQL)

No production is perfect. The industry standard is AQL 2.5 for general consumer goods โ€” meaning up to 2.5% of units can have minor defects. For electronics or safety-critical items, use AQL 1.0 or stricter.

We sample according to ISO 2859-1 standards based on your order quantity, then apply the AQL threshold you choose. If defects exceed the threshold, we reject the entire batch โ€” no exceptions.

Need QC for your order? We do this every day. Contact us โ†’