A golden sample is the one approved unit that buyer and factory both sign, seal and keep — one at the factory, one in your office — as the reference every production unit is judged against. Testing decides whether a sample deserves approval; the golden-sample system is what makes that approval stick: a written approval record, sealed units on both sides, and a rule that any change re-opens the approval.
Key Takeaways
- A golden sample is a signed, sealed, production-representative unit kept by both sides.
- Its power is the approval record: identity, photos, configuration, software, packaging, sign-off.
- Any later change must be notified and re-approved, with a version note keeping the reference current.
- At inspection, the record — not anyone’s memory — settles whether production matches.
What Makes a Sample “Golden”
Not every good sample is a golden sample. Three properties separate the reference unit from an ordinary evaluation unit:
- Production-representative. Built on the normal line, in the market configuration you plan to sell — not a hand-prepared showpiece the line cannot match.
- The exact variant. Connector, plug and cable length as ordered. The EV-ACS4005T is listed with a 25 ft or 28 ft cable; the golden sample must be the recorded variant, or the reference argues against you.
- The complete sales set. Unit, accessories, retail box, inserts and manual — labels and packaging are part of what you approved.
Approval comes after testing, not instead of it — which checks a sample should pass is covered in our guide to testing an EV charger sample before a bulk order. This article covers the step after it passes.
The Approval Record: Capture It in Writing
The golden sample’s power is in its paperwork. Capture these items at approval and sign the record with the factory:
| Record item | What to write down |
|---|---|
| Identity | Model, variant, serial number, approval date |
| Appearance | Photographs of every side, the rating label, the connector and the cable |
| Configuration | Cable length, plug type, current settings as shipped |
| Software | Firmware or app version, recorded exactly as displayed |
| Packaging | Box print version, inserts and manual edition in the sales set |
| Sign-off | Names and signatures from both parties, on the record and each unit’s tag |
| Storage | Where each sealed unit is kept, and who may open it |
Seal each unit — a signed tag or a seal across the carton — and store one at the factory, one in your office, unopened. A reference either side can swap is not a reference.
Change Control: When the Reference Stops Matching
The system fails in one predictable way: the product changes and the golden sample does not. Guard against it with two rules, agreed in writing at approval time:
- Any change re-opens the approval. A component substitution, a firmware update, a label or packaging revision — each must be notified and re-approved in writing before it reaches production.
- Keep a version note. Version 1 approved on a stated date; when a change is approved, the note records what changed, when, and who approved version 2. Refresh the retained units to match.
Without a version note, drift stays invisible: the factory compares production against its memory, you against yours, and the argument surfaces with a finished order waiting to ship.
Using the Golden Sample at Inspection
The system pays off at pre-shipment inspection. The inspector pulls cartons at random and compares units against the reference: colour, logo, labels, configuration and packing. Because the approval record exists — serial number, photographs, version note — questions on the day are settled by documents, not recollections. If a unit differs, the signed record defines which one is wrong, and the shipment waits until the difference is explained.
Golden Samples in an EVDANCE Order
EVDANCE is a Shenzhen manufacturer founded in 2011, exporting to more than 30 countries, with private label from 100 units. For branded orders, your logo and packaging are part of the approved set: they belong in the golden sample and its record. Agree the approval record when you place the order — start through the OEM and private-label program or contact us.
Frequently Asked Questions
How many golden samples do I need?
At least two of each approved variant: one sealed at the factory, one in your office. Different market configurations each need their own reference — the variant is part of what is locked in.
Should the golden sample be a prototype or a production unit?
A production-representative unit, built the way the line will build the order. A prototype can be hand-finished in ways production cannot repeat, so it cannot serve as the reference.
What happens if production does not match the golden sample?
The signed approval record decides what “match” means. Hold the shipment, identify whether the difference is an unapproved change or a production error, and apply the remedy your order terms provide.
Related Reading
- How to Test an EV Charger Sample Before Placing a Bulk Order
- Pre-Shipment Inspection and AQL Sampling for EV Charger Orders
- Private-Label EV Chargers: Packaging, Labeling and Manuals
- Rating Labels and Required Markings on EV Chargers
