Guangzhou yunyu trading

Active

China COA: Yes - third party via Finnrick Verified COA

Testing and trust

Third-party COA

Yes - third party via Finnrick

Testing lab

Finnrick Analytics

View their COA library

Reputation

Community trust

Tier 1 rating — consistently high purity and quantity per Finnrick testing

Community reputation

Finnrick Grade A vendor with consistently high purity and quantity across 4 tested products. Average purity/quantity score of 7.6/10 (range 7.3-8.0). Most recent testing completed March 16, 2026.

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