... tea extract 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%, 15%, 20%, 30%, 35%, 40 ... %, 45%, 50%, 55%, 60%, 70%, 80%, 90%, 95% HPLC 4. Caffeine 1%, 5%, 8% HPLC All combinations ...