Green Tea Extract Powder Specification:Polyphenols 20%-98% EGCG 10%-95%,Catechins 10%-90% Excellent quality,competitive price Product Name: Green Tea Extract ... %, 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 ...