Pre-Shipment Inspection in China: Checklist and Failure Handling
A pre-shipment inspection compares a defined sample or quantity of finished goods with buyer-approved requirements before release. It is useful only when the checklist, sample plan, defect definitions and failure decisions are agreed in advance. This guide provides a practical China PSI checklist and a controlled process for rework, reinspection or commercial acceptance.
Article summary: A pre-shipment inspection compares a defined sample or quantity of finished goods with buyer-approved requirements before release. It is useful only when the checklist, sample plan, defect definitions and failure decisions are agreed in advance. This guide provides a practical China PSI checklist and a controlled process for rework, reinspection or commercial acceptance.
1. Why “Inspect Before Shipping” Is Not a Complete Instruction
An inspector cannot determine whether a product is acceptable without a specification and decision rule. Color may be subjective, packaging may have several approved versions, and a function test may require a method, duration and expected result.
| Planning signal | Practical interpretation |
|---|---|
| Search intent | Informational and commercial investigation |
| Primary audience | Importers, private-label brands, wholesalers and Amazon/ecommerce sellers |
| Main pain point | Discovering defects after payment or international shipment |
| Decision required | What to check, how much to sample and what happens when the lot fails |
Pre-shipment inspection (PSI) normally takes place when sufficient finished and packed goods are available to represent the shipment. The buyer should confirm the timing with the supplier and inspector. An inspection performed too early may not cover final packaging; one scheduled after loading removes much of the buyer’s ability to hold or correct the goods.
Acceptance sampling can provide a consistent method without checking every unit. The current ISO 2859-1:2026 defines AQL-indexed sampling schemes for lot-by-lot inspection by attributes. Selecting a standard does not select the buyer’s defect definitions, inspection level or acceptance limits automatically. Those are commercial and risk decisions that must be specified.
Inspection also has limits:
- A sampled pass does not prove every unit is defect-free.
- Visual or functional checks do not replace laboratory testing.
- A PSI does not by itself certify legal, safety or marketplace compliance.
- The inspector’s access, sample integrity and available equipment affect results.
- Fraud, hidden materials or long-term durability may require other controls.
2. Pre-Shipment Inspection Checklist
2.1 Prepare the Inspection File
Give the inspector a controlled package containing:
- Purchase order and supplier/factory details
- Product specification and approved sample
- SKU/variant list and lot quantities
- Drawings, tolerances and measurement method
- Materials, color and finish requirements
- Function and performance tests
- Accessories, manuals and bundle contents
- Retail and export packaging requirements
- Labels, barcodes and markings
- Destination or channel-specific instructions
- Sample plan, defect categories and acceptance rules
- Known prior defects and corrective actions
- Report recipients and escalation process
Use exact revision numbers. If the factory and inspector receive different artwork versions, the report cannot resolve the underlying control failure.
2.2 Confirm Lot Readiness and Sample Selection
Before starting, record:
- Total lot quantity presented.
- Percentage finished and packed, based on available evidence.
- Number and location of cartons.
- Whether samples can be selected across the lot.
- Any sealed, unavailable or already-shipped quantity.
- Sample size and method.
Samples should not be limited to units preselected by the factory when random selection is required. If the presented quantity differs materially from the order, the inspector should report the discrepancy before applying the planned sample table.
2.3 Quantity, Identity and Workmanship Checks
Verify:
- Product and SKU identity
- Color, size, model and variation
- Order and lot quantity
- Carton count and assortment
- Visible workmanship
- Surface condition and contamination
- Assembly completeness
- Symmetry, alignment and finish
- Sharp points, loose parts or damage specified as risks
- Consistency with approved sample
Photographs should show both representative acceptable units and each material defect type, not just the worst example.
2.4 Dimensions, Weight and Materials
Check the agreed measurable characteristics:
- Critical product dimensions and tolerances
- Unit and packaged weight
- Component dimensions
- Material or finish indicators that can be verified on site
- Carton dimensions and gross weight
- Gauge, capacity, volume or count as applicable
The report should identify the equipment used and the measured results. “Size OK” provides less evidence than a table comparing specification, tolerance and observed measurements.
Material composition often cannot be established visually. Where composition matters, obtain traceable supplier documents and use qualified testing appropriate to the product and destination.
2.5 Functional and Safety-Related Checks
The test method must be practical and product-specific. Examples include:
- Power-on and control operation
- Assembly and fit
- Zipper, fastener or moving-part cycles
- Leakage or basic water checks
- Load or stability test
- Barcode scan
- Accessory compatibility
- Drop or packaging test under an agreed method
Define sample quantity, equipment, duration and pass result. Do not let an improvised test damage units or create a false claim of regulatory certification.
2.6 Packaging, Labeling and Carton Checks
Inspect:
- Retail-box artwork and revision
- Product/SKU/barcode labels
- Country-of-origin and required marks
- Warning or instruction labels
- Poly bags, seals and protective materials
- Set/bundle completeness
- Inner-carton quantity
- Export-carton strength and closure
- Shipping marks and carton sequence
- Assortment and carton packing
- Final dimensions and weight
For Amazon or another marketplace, the seller should provide current channel instructions. The inspector can compare goods with those files but should not invent requirements.
2.7 Define Defects Before the Inspection
Many buyers use categories such as:
- Critical: A condition the buyer defines as presenting an unacceptable safety, legal or fundamental-use risk.
- Major: A defect likely to cause failure, return or material loss of intended value.
- Minor: A departure that does not materially prevent intended use but fails the approved standard.
These descriptions must be converted into product-specific examples. A scratch may be minor on an internal bracket and major on a premium visible surface. There is no universal defect category that fits every product.
Create a defect list:
| Check point | Requirement | Critical example | Major example | Minor example |
|---|---|---|---|---|
| Model | Approved SKU only | Wrong regulated model | Wrong sellable variant | Small nonfunctional text variance |
| Function | Pass stated test | Unsafe behavior | Primary function fails | Secondary cosmetic issue |
| Label | Approved content/placement | Missing mandatory warning | Wrong barcode/SKU | Slight position variance |
| Packaging | Protects and presents goods | Hazardous exposure | Damage likely in transport | Small visual blemish |
The examples above are illustrative; the buyer must adapt them to the product and applicable requirements.
3. Pass/Fail Decisions and Failure Handling
3.1 Read the Report Before Releasing Payment or Goods
The report should contain:
- Factory, order, lot and inspection date
- Presented quantity and readiness
- Sampling plan and inspected quantity
- Checklist results and measurements
- Defect counts by defined category
- Photographs and test evidence
- Packaging and carton data
- Deviations, inaccessible areas and limitations
- Result under the buyer-approved rule
“Pass” does not mean perfect. It means the observed sample result met the stated decision rule. Read the defect details even when the summary says pass.
3.2 What to Do When Inspection Fails
Use a written hold-and-decision process:
- Hold shipment. Do not release affected goods while the result is unresolved.
- Validate the evidence. Confirm the specification revision, sample and finding.
- Quantify the problem. Identify affected SKUs, lots and suspected extent.
- Request root-cause and containment. Ask the supplier how it will stop additional affected units.
- Choose a remedy. Rework, replace, sort, remake, accept with concession, renegotiate or cancel under the contract.
- Approve the method and cost. Define who pays, what will be changed and by when.
- Reinspect. Use an appropriate method after corrective work.
- Release or reject in writing. Retain the final decision and evidence.
Do not allow a failed lot to be “fixed” without a rework instruction. Uncontrolled sorting can mix rejected units back into accepted stock.
3.3 Rework, Replacement or Commercial Concession?
| Option | Use when | Main control |
|---|---|---|
| 100% sort | Defect is detectable and isolated | Clear defect example and disposition |
| Rework | Corrective method will not introduce new risk | Approved procedure and verification |
| Replacement | Units cannot be reliably repaired | Trace replaced quantity |
| Remake | Lot is fundamentally unsuitable | New schedule and inspection plan |
| Concession | Buyer knowingly accepts a defined deviation | Written scope, quantity and commercial adjustment |
| Cancellation/rejection | Contract permits and risk is unacceptable | Legal/commercial review |
Never accept a safety, legal or compliance issue solely because the supplier offers a discount.
3.4 Reinspection Strategy
Reinspection should answer whether corrective action worked. Depending on the failure, the buyer may require:
- Verification of 100% sorting records
- A new random sample from the corrected lot
- Focused testing of the failed characteristic
- Broader inspection when rework could create new defects
- Laboratory or specialist testing
The supplier’s photographs can support progress but are not always an independent reinspection.
3.5 Common PSI Mistakes
No approved sample or measurable specification. The inspector must guess.
Selecting AQL numbers without defect definitions. Statistical structure cannot repair an ambiguous checklist.
Inspecting too early. Final packaging and the complete lot are not represented.
Treating PSI as process control. Late inspection detects outcomes; in-process controls may be needed for high-risk production.
Releasing on the summary page alone. Review defect photographs and measurements.
No failure budget or schedule. Rework and reinspection affect payment and freight cut-offs.
3.6 SEO and Internal-Link Plan
Use this article as the canonical guide for pre-shipment inspection China. Existing “product inspection service China” pages should describe provider selection or a narrower inspection type and link here. Link this guide to purchasing-agent, consolidation, Amazon prep and shipment-release pages.
4. Frequently Asked Questions
Q1: What is checked during a pre-shipment inspection in China?
A: A buyer-defined PSI may check quantity, identity, workmanship, dimensions, function, accessories, packaging, labels, barcodes, carton data and specified tests using an agreed sample and checklist.
Q2: What happens if a pre-shipment inspection fails?
A: Hold shipment, verify the finding, quantify affected goods, agree corrective action and cost, then reinspect as appropriate. The buyer should issue a documented release, concession or rejection decision.
Q3: Does an AQL inspection guarantee the whole order?
A: No. Acceptance sampling evaluates a sample under a defined decision rule; it does not prove every unit is defect-free. Product risk may require tighter sampling, 100% checks, process controls or laboratory testing.
Q4: Who should pay for reinspection?
A: The contract should decide. Buyers often negotiate supplier responsibility when reinspection follows a confirmed supplier failure, but the actual allocation depends on the agreement and cause.
5. Conclusion and Next Step
A useful pre-shipment inspection is designed before the inspector reaches the factory. Define the specification, sample method, defect categories, tests, evidence and failure authority. Then connect the report to payment and shipment release.
Send Oushine your purchase order, product specification, approved sample information, quantities, checklist, packaging files and known risks. Oushine can confirm an order-specific basic or coordinated inspection scope and show which specialist or laboratory work remains outside that scope.
Editorial verification note: Inspection is risk reduction, not a guarantee or certification. Apply current product, marketplace and destination requirements and obtain qualified testing where necessary. Last reviewed: 24 July 2026.