... %-90% Excellent quality,competitive price Product Name: Green Tea Extract PowderBotanical Name: Camellia sinensisOur Advantage:a. ... 40%, 50%, 60%, 70%, 80%, 90%, 95%, 98% UV 2. Catechins 10%, 15%, 20%, 25%, 30%, 40%, ... Metals< 20ppmArsenic(As)< 2ppmLead(Pb)< 2ppmAssayPolyphenols by UV> 95.0%Catechins by HPLC> 70.0%EGCG ... the most advanced extraction unit, and HPLC,UV,GC,AA. We are also in cooperation ...