China sourcing samples: turn approval into a production change-control record

A sample approval needs an identity and a defined scope

A message saying “sample approved” is too weak to control mass production. Create a numbered approval record that identifies the buyer, supplier legal entity, actual factory, purchase order or RFQ version, product and SKU, sample ID, dispatch and approval dates, and the person authorised to decide. State whether the item is a concept sample, appearance sample, functional prototype, pre-production sample or packaging sample. If it was handmade, made with temporary tooling or produced outside the planned line, record that limitation instead of treating it as proof of repeatability.

The U.S. International Trade Administration recommends careful partner selection and continued due diligence as a relationship develops. ICC describes its model international sale contract as requiring a precise underlying contract and lists written modifications, seller documents, inspection and examination among its subjects. A Chinese SAMR construction-contract model goes further within its specific construction context: it provides for samples linked to data and drawing numbers, sealed after approval, and written agreement when a sample changes the contract. That model is not a rule for every cross-border goods purchase, but it is a useful procedural example for designing a traceable sample record.

Build one reference pack, not a loose photo album

Keep the physical sample together with the approved drawing or specification revision, bill-of-material or material description where relevant, dimensions and tolerances, colour and finish reference, packaging artwork, label and barcode files, test method and result, accessories, and every accepted deviation. Photograph the sample from repeatable angles with its ID visible and include a scale or measurement evidence where size matters. If practical, retain one identified sample with the buyer or coordinator and one at the factory, and record who holds each item and the storage conditions.

Write a document-precedence rule. For example, a controlled drawing may govern dimensions while an approved physical sample governs an agreed texture, but neither should silently override mandatory destination-market requirements. A photo can support identification but may distort colour, gloss and scale; a physical sample can deteriorate or be replaced. Use tamper-evident labels or another agreed identifier, keep the approval timestamp and approver, and require both sides to confirm the same revision rather than referring to “the last sample” in chat history.

Put every proposed change through a written gate

Require the supplier to submit a change request before using a different material, component, sub-supplier, mould, process, finish, factory, packaging structure, label or test method. The request should identify the affected SKU and batches, old and proposed values, reason, quality and safety impact, destination-compliance questions, cost and lead-time effect, supporting test or sample evidence, and the earliest production date. Silence is not approval. Separate old and changed stock until the buyer has recorded a decision.

Choose the evidence according to risk. A spelling correction may only need an artwork proof, while a resin, electrical component, load-bearing material, food-contact layer or manufacturing-site change may require a new sample, targeted test, certificate-scope review or destination specialist. The buyer or importer decides whether the change is acceptable for the actual market; the supplier discloses and supports the proposal; the sourcing coordinator tracks documents and deadlines. None of these roles can replace a regulator, laboratory or certification body.

Use the reference at start-up, inspection and reorder

Before full production, compare the first production output with the approved pack and record any difference. During production follow-up, request evidence tied to the same SKU, revision and batch. Give the inspection team the controlled reference set rather than an unlabeled sample or old photo, and instruct them which characteristics can be compared visually and which require measurement or testing. If a deviation is accepted, update the change log and inspection brief before final payment or cargo release.

Reorders need a fresh confirmation because people, materials, tooling, sub-suppliers and production locations can change. Ask the supplier to declare changes since the previous batch and decide whether the existing sample remains representative. Sample approval reduces ambiguity; it does not prove that every unit matches, that a certificate covers the shipped model, or that the product complies in Taiwan, Indonesia or a particular African country. Those questions still need batch evidence, appropriate inspection or testing, and destination-specific verification.

Your next-order checklist

Assign the sample a unique ID and link it to the supplier entity, factory, SKU, order and specification revision.
Keep the sample with controlled drawings, material and finish references, artwork, test evidence and accepted deviations.
State which reference controls each characteristic and who holds each physical sample.
Require a written change request before substitutions or changes to process, factory, packaging or labels.
Reconfirm the reference at production start, inspection and every reorder, then record the release decision.

Sources & reference dates

Prepared by the Yifeng Sourcing editorial team with AI assistance from the primary sources listed below. Source dates are recorded; destination-specific requirements should be reconfirmed before acting. This is not legal or tax advice.