... powder. 1. Polyphenols 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, 98% UV 2. Catechins 10%, 15%, 20%, 25%, 30%, 40%, 50 ... %, 60%, 65%, 70%, 75%, 80%, 90% HPLC 3. EGCG 10%, ... Hangzhou New Asia International Co., Ltd.ItemsSpecificationAppearanceYellow PowderParticle Size100% through 80 MeshLoss on Drying< 5.0%Heavy Metals< 20ppmArsenic(As)< ...