Smart lock factory in Wenzhou, China — samples, OEM and export documents in house.

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What You Receive Before the Goods Ship

Buyer Guide · Published 2026-10-14

The balance payment normally falls due before the goods leave. Everything in this list exists so that decision is made on evidence rather than on trust, and so that a problem is found while it is still inexpensive to fix.

1. The confirmed specification sheet

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What it namesModel, colour, finish, body, app version and firmware version
What elsePackaging, manual language and carton marking
What it doesBecomes the reference the batch is checked against
What to do with itCompare it against your purchase order line by line

2. Assembly photographs

Photographs from the production line, taken during assembly rather than staged afterwards. They show the batch exists and that the parts going into it are the ones specified.

  • The body and the panel being assembled
  • The electronics and the battery contacts
  • The finish on a sample of units
  • The units stacked before packing

3. A working video

A short video of a finished unit being operated: fingerprint, keypad, card or app, whichever the model uses, plus the mechanical key. This is the check that catches a firmware or wiring problem before the container is sealed.

4. Packing and carton marking photographs

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Inner packingThe colour box, tray and manual as packed
Master cartonQuantity per carton, and the carton closed
MarkingShipping marks and barcode against your artwork
Pallet or looseHow the cartons are presented for loading

This is the last point at which a wrong barcode or a wrong manual language can be corrected at the factory rather than in your warehouse.

5. Document copies before the originals

  • Commercial invoice
  • Packing list
  • Form E or the relevant origin document
  • Bill of lading draft
  • Battery declaration if the goods contain a lithium battery

Draft documents are sent for you to check the consignee, the description and the values before the originals are issued. Correcting a bill of lading after issue is slow and sometimes expensive.

6. Who signs off, and what happens if something is wrong

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Who checksThe person who raised the purchase order, against the specification sheet
If the finish is wrongCorrected at the factory before dispatch
If the marking is wrongReprinted before loading
If a function failsDiagnosed and fixed before the container is sealed
Third-party inspectionSGS, BV or TUV can be booked at the factory instead

Where an inspection is booked, the report is issued before dispatch and the balance is normally settled after a passing report.

Ask for all six before the balance payment rather than after. Every one of them is cheaper to act on while the goods are still at the factory.

Buyer Questions

Three questions this guide usually raises.

On this topic

What should I check before paying the balance?

The confirmed specification sheet, assembly and packing photographs, a working video, the carton marking, and the draft documents. All six should arrive before you pay.

Can I book a third-party inspection?

Yes. SGS, BV or TUV can inspect at the factory, and the report is issued before dispatch so the balance can be settled against a passing report.

What if the carton marking is wrong?

It is reprinted before loading. That is precisely why the packing photographs are sent before dispatch rather than after.

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