Test reports, quality control and anti-fading finish
Third-party test reports on our products: the leather pH report and colour-fastness-to-rubbing reports for amber, black and red leather (all passed), alongside our incoming-to-final inspection process and the anti-fading, wash performance of our clear-varnish finish.
Test report viewer
Switch between reports below; click a thumbnail to read the original pages full size, with arrow-key paging and Esc to close.
Leather pH test reportFZ22101824
- Report no.
- FZ22101824
- Result
- Pass
The original report is in Chinese and the scans are provided as issued. Contact us for an English summary or a specific item.
Colour fastness · AmberQG25000240
- Report no.
- QG25000240
- Sample
- Amber leather
- Test item
- Colour fastness to rubbing
- Standard
- QB/T 2537-2001
- Result
- Pass
The report applies only to the samples submitted; dry rubbing (50 cycles) and wet rubbing (10 cycles) both measured 4-5.
Colour fastness · BlackQG25000241
- Report no.
- QG25000241
- Sample
- Black leather
- Test item
- Colour fastness to rubbing
- Standard
- QB/T 2537-2001
- Result
- Pass
The report applies only to the samples submitted; dry rubbing (50 cycles) and wet rubbing (10 cycles) both measured 4-5.
Colour fastness · RedQG25000242
- Report no.
- QG25000242
- Sample
- Red leather
- Test item
- Colour fastness to rubbing
- Standard
- QB/T 2537-2001
- Result
- Pass
The report applies only to the samples submitted; dry rubbing (50 cycles) and wet rubbing (10 cycles) both measured 4-5.
Colour fastness test reports
Three third-party commission reports covering amber, black and red leather. The test item is colour fastness to rubbing, and all three passed.
| Report no. | Sample | Test item | Standard | Result |
|---|---|---|---|---|
| QG25000240 | Amber leather | Colour fastness to rubbing | QB/T 2537-2001 | Pass |
| QG25000241 | Black leather | Colour fastness to rubbing | QB/T 2537-2001 | Pass |
| QG25000242 | Red leather | Colour fastness to rubbing | QB/T 2537-2001 | Pass |
Measured values
| Condition | Requirement | Result |
|---|---|---|
| Dry rubbing (50 cycles) | ≥3-4 | 4-5 |
| Wet rubbing (10 cycles) | ≥3 | 4-5 |
- Product standard: QB/T 1872-2004, garment leather
- Applicant: Huizhou Yipin Clothing & Leather Co., Ltd
- Test type: commission test
- Date received 2025-02-24, date issued 2025-02-26
- The report applies only to the samples submitted; original scans are available on request
How we control quality
Clear varnish finish and colour fastness
A clear varnish coat is applied to the leather surface as a protective layer. Its purpose is to resist fading — this is a finishing process, not an applied film.
- Surface treatment: a clear varnish coat on the leather face
- Purpose: anti-fading
- Colour fastness grade 3–4
- Wash-resistant, dry cleaning included
- Applied to: leather patches used on garments and jeans
- The colour-fastness figure above is our own measure and is not tied to a standard reference. If you need a report to a nominated standard or laboratory, tell us the scope in your enquiry and we will confirm feasibility and timing first.
Need other test items?
Acceptance requirements differ from brand to brand. If your order needs results for specific test items or from a particular laboratory, tell us in your enquiry — we will confirm feasibility and timing before committing.