Order control · inspection release
Pre-shipment inspection in China
A pre-shipment inspection is useful only when the inspector sees the right lot, selects units independently, checks the buyer’s actual requirements, and returns enough evidence for a release decision. Booking “standard inspection” without those controls can produce a polished report about the wrong question.
Before
Define readiness and scope
On site
Protect access and evidence
After
Separate finding from release
- Editorial status
- Source-checked buyer guide
- Last reviewed
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- AllForSourcing Editorial Desk
Research basis: The current ISO 2859-1:2026 record, ASQ acceptance-sampling material, CPSC representative-sample guidance, and ISO supply-chain quality guidance.
Boundary: This guide does not choose inspection levels or AQL values, reproduce licensed sampling tables, establish product compliance, approve a shipment, or replace product-specific engineering and regulatory review.
Direct answer
Treat inspection as a contract gate, not a photo service
The purchase order should identify when inspection may occur, which specification and approved sample apply, how the lot is formed, what the inspector can access, which checks are required, how defects are classified, and who may release payment or shipment. The inspection company reports findings; the buyer makes the commercial disposition under the contract.
Define a readiness gate instead of copying a completion percentage
There is no universal completion percentage that fits every product and inspection scope. A buyer checking final packaging and shipping marks needs representative finished cartons. A buyer investigating an assembly process may need an earlier in-process visit. Write observable readiness conditions rather than relying on “inspection near completion.”
- Defined PO lot and variant quantities are available
- Production and packing status are recorded by SKU
- Finished goods are not mixed with rejected or unfinished units
- Cartons, labels, manuals and accessories are available where in scope
- The inspector can select cartons and units without factory preselection
- Required gauges, fixtures and safe test conditions are confirmed
Send an inspection brief that can survive a shift change
| Control | Minimum instruction | Evidence expected |
|---|---|---|
| Identity | Factory, supplier, PO, SKU and revision | Opening meeting record and product/lot photos |
| Lot | Quantity, variants, production dates and location | Available/packed quantities and carton map |
| Sampling | Named scheme, edition, plan inputs and selection method | Selected cartons/units and sampling calculation |
| Checks | Characteristic, method, tolerance, equipment and count | Actual readings, photos and unresolved limitations |
| Defects | Product-specific catalogue and classification | Counts reconciled to defect photos and units |
| Release | Notification, hold and disposition authority | Report status separate from buyer approval |
A controlled on-site sequence
- 01
Confirm identity
Record the site, responsible contacts, supplier and factory relationship, PO, product and current revision before opening cartons.
- 02
Count the presented lot
Reconcile finished, packed and available quantities by SKU. Record missing, unfinished, quarantined or inaccessible goods.
- 03
Select independently
Choose across carton locations and variants according to the defined method. Factory-presented samples do not represent the lot.
- 04
Execute exact checks
Use specified instruments, test conditions, units, sample counts and acceptance criteria. Mark unavailable or unsafe tests as open—not passed.
- 05
Close without bargaining
Reconcile findings and let the supplier comment, but preserve the observed result. Commercial concessions belong in the buyer’s later disposition.
Sampling boundary
AQL is one part of PSI—not a replacement for the brief
Acceptance sampling can support decisions about defined defect classes in a defined lot. It does not decide which requirements matter, prove that hidden or regulated characteristics comply, or guarantee that every unit is good. Use the current standard edition and controlled plan inputs; keep critical safety and regulatory tests in their own evidence path.
Read the AQL planning guideRead the report as an evidence package
Reconcile first
- Does the inspected lot match the order?
- Were all variants and required stages available?
- Do sample and defect counts reconcile?
- Do photos identify the actual product and carton?
Then test the conclusion
- Were any checks omitted, substituted or constrained?
- Are actual readings shown—not only “pass”?
- Were supplier corrections made during inspection?
- Does the summary preserve every open issue?
Choose a failed-lot path without rewriting the result
A failure can lead to containment, sorting, rework, replacement, a new random inspection, a documented concession or rejection. The choice depends on defect severity, root cause, available time, contract terms and destination requirements. Do not ask the inspector to relabel a defect because the shipment is late.
Release only when four records agree
Order: current specification, sample and purchase terms
Inspection: lot, method, evidence and findings
Correction: containment, rework and verification where needed
Approval: named buyer decision and remaining exceptions
Public source citations
ISO 2859-1:2026 — Sampling procedures for inspection by attributes
iso.org | current international standard record | checked 2026-07-16
PSI-02ASQ/ANSI Z1.4 and Z1.9 sampling plan standards
asq.org | official standards organization guidance | checked 2026-07-16
PSI-03CPSC: Selecting a Third Party Laboratory
cpsc.gov | official product-safety guidance | checked 2026-07-16
PSI-04ISO 9001 in the supply chain
iso.org | official quality-management guidance | checked 2026-07-16