Pre-Shipment Inspection in China: What Should Be Checked?
A pre-shipment inspection is the last opportunity to identify quality problems before goods leave China. This guide explains what should be checked, how to set inspection criteria, and what to do when defects are found.
A pre-shipment inspection is conducted when production is complete and goods are ready for shipment. It is the last point at which quality problems can be identified and addressed before goods leave China — and before your options for resolving them become significantly more limited.
This guide explains what a pre-shipment inspection should cover, how to set inspection criteria, and what happens when defects are found.
Why Pre-Shipment Inspection Matters
Once goods are loaded into a container and shipped, your ability to deal with quality problems changes dramatically. If defects are discovered after arrival in the UK, you face the cost and delay of returning goods to China, negotiating a replacement shipment, or accepting substandard products. None of these outcomes is good.
A pre-shipment inspection does not guarantee that every item in the shipment is perfect — inspection is typically conducted on a sample basis for large orders. But it provides a statistically meaningful assessment of the quality of the shipment before it leaves China, when the factory still has the opportunity to correct problems.
Setting Inspection Criteria Before the Inspector Arrives
This is one of the most important points in this guide: the inspection criteria must be agreed before the inspection takes place.
An inspector arriving at a factory without clear criteria will conduct a general assessment. That assessment may miss specific requirements that matter to you, and any disputes about whether goods are acceptable will be harder to resolve without agreed standards.
Inspection criteria should cover:
- The approved sample or specification against which goods will be checked
- Critical dimensions and tolerances
- Appearance standards — what constitutes an acceptable surface finish, colour variation, or cosmetic defect
- Defect classifications — critical, major, minor
- Functional requirements and how they will be tested
- Labelling requirements
- Packaging specification
- Carton marking requirements
What a Pre-Shipment Inspection Should Check
Quantity
Verify that the shipment contains the ordered quantity. Count cartons and verify the quantity per carton. Discrepancies in quantity are more common than buyers expect.
Product Identity
Confirm that the correct products are present — correct model, specification, colour, and any other relevant identifiers. This is particularly important when multiple product variants are ordered.
Dimensions
Check critical dimensions against the specification. For engineered components, this means measuring with appropriate instruments. For consumer products, it means checking key dimensions that affect fit, function, or appearance.
Appearance and Workmanship
Check for surface defects, scratches, dents, colour variations, poor finishing, assembly defects, and any other appearance issues. Compare against the approved sample.
Be specific about what constitutes an acceptable defect. A minor scratch on a hidden surface may be acceptable; the same scratch on a visible surface may not be.
Function
Test that products function as required. For mechanical products, this means checking that moving parts operate correctly. For electrical products, it means basic functional testing. For assemblies, it means checking that components fit and function together.
Assembly
Check that assembled products are correctly assembled — no missing components, no incorrect components, no assembly errors.
Components
For products with multiple components, verify that all components are present and correct.
Colour
Check colour against the approved standard. Colour variation between batches is a common issue, particularly for products with painted or coated surfaces.
Surface Finish
Check surface finish against the approved standard — paint adhesion, coating thickness where relevant, texture, gloss level.
Labelling
Verify that labelling is correct — product name, model number, regulatory markings (CE, RoHS, etc.), country of origin, warnings, and any other required information. Labelling errors can cause customs problems and regulatory issues.
Packaging
Check that individual packaging meets the specification and provides adequate protection. Check inner and outer carton construction and condition.
Carton Markings
Verify that cartons are correctly marked for shipping — consignee details, destination, gross and net weight, dimensions, handling instructions.
Drawing and Specification Compliance
For engineered products, check compliance with the drawing or specification for all critical requirements.
Testing
Where appropriate, conduct functional or performance testing. The scope of testing should be agreed in advance.
What Happens When Defects Are Found
When defects are identified during inspection, the inspector should document them clearly — type of defect, quantity affected, photographs, and a clear description of how the defect relates to the specification.
A useful inspection report gives the buyer enough information to make an informed decision. A vague pass/fail statement without supporting detail is not adequate.
When defects are found, the options typically include:
- Sorting — separating acceptable from defective items
- Reworking — correcting defects that can be corrected
- Replacing — replacing defective items with new production
- Accepting with concession — accepting goods with minor defects where the impact is acceptable
- Rejecting — refusing to accept the shipment
The appropriate response depends on the nature and extent of the defects, the time available, and the commercial situation. See our article on what to do when a supplier fails an inspection for more detail.
After corrective action, reinspection is required to verify that the problem has been resolved.
Inspection Is Not a Substitute for Good Manufacturing
It is worth repeating: pre-shipment inspection is a check, not a quality system. A factory that relies on end-of-line inspection to catch defects is not managing quality — it is sorting products after the fact.
The most effective quality control combines clear specifications, approved materials, in-process inspection, and pre-shipment inspection. See our quality control guide for the full picture.
For UK businesses without in-country presence, working with a China sourcing and manufacturing service that has people on the ground means inspections can be conducted by someone who can physically visit the factory and report back with detailed findings. This is one of the core functions of a UK China sourcing partner — having people in China who can act on your behalf rather than relying on the factory's own reporting.
Related Articles
- Quality Control in China: A Practical Guide for UK Importers
- What to Do When a Chinese Supplier Fails an Inspection
- China Factory Audit Checklist: What UK Buyers Should Check
Need Pre-Shipment Inspection Support in China?
Sauce Asia arranges and manages pre-shipment inspections across China. Our China-based team can visit factories, check goods against your specification, and provide detailed inspection reports before shipment.
Once goods pass inspection, we can also coordinate shipping from China to the UK — whether you need sea freight, air freight or consolidation.
Contact Sauce Asia to discuss your requirements.
Colin Moore has worked with Chinese manufacturers since 1999 and leads Sauce Asia's client relationships and sourcing strategy. Sauce Asia supports UK businesses with supplier sourcing, manufacturing, factory audits, production management, quality inspection and shipping from China.
