- What happened
- A good sample is followed by production that differs from the agreed specification.
- What evidence the buyer sees
- Different materials, tolerances, packaging, markings or test results.
- Possible legitimate explanation
- Unclear specifications, approved substitutions or production variation may explain the difference.
- Evidence to request
- Use measurable specifications, approved sample references, inspection criteria, photos, test reports and change-control records.
- When to pause payment
- Hold the balance or shipment decision when acceptance evidence is missing or the deviation is unresolved.
- What Alibaba protection may or may not cover
- Order-specific quality protection depends on what the online order records and the applicable terms—not the supplier badge.