Vendor profile
Research · US · —
Zhengzhou Lan Yun Cosmetic Trading
B+
Composite 7.7 / 10
Last updated 2026-10-12. Composite is computed from the live database; missing sub-scores redistribute weight across the others.
Peptide breakdown
| Peptide | Score | Lab quality | Tests | Purity | Qty var. | $/mg verified | Last test | Ranking |
|---|---|---|---|---|---|---|---|---|
| GHK-Cu | 8.9B+ |
8.6 | 7 | — | — | — | — | view |
| Tirzepatide | 8.0B+ |
7.6 | 12 | — | — | — | — | view |
| Ipamorelin | 7.7B+ |
7.2 | 2 | — | — | — | — | view |
| Retatrutide | 7.7B+ |
7.1 | 15 | — | — | — | — | view |
| Tesamorelin | 5.7C |
5.2 | 2 | — | — | — | — | view |
| BPC-157 | 5.5C |
4.3 | 3 | — | — | — | — | view |
| DSIP | — |
— | 0 | — | — | — | — | view |
| PT-141 | — |
— | 0 | — | — | — | — | view |
| CJC-1295 | — |
— | 0 | — | — | — | — | view |
| Semax | — |
— | 0 | — | — | — | — | view |
| SS-31 | — |
— | 0 | — | — | — | — | view |
| TB-500 | — |
— | 0 | — | — | — | — | view |
COA transparency
- ○ Publishes per-batch COAs (not just one COA for everyone) (pending)
- ○ Both HPLC and mass spec shown (pending)
- ○ Endotoxin or sterility data shown (pending)
- ○ At least one COA independently cross-checked (pending)
- ○ Most recent COA within 90 days (pending)
All vendor grades, side-by-side
Compare Zhengzhou Lan Yun Cosmetic Trading against every other vendor in the grade hub →
Top-5 ranked vendors per peptide, plus the highest-rated vendors overall. Daily refresh.