... 5%,8%HPLCAll combination for Polyphenols, Catechins, EGCG and Caffeine,For example Polyphenols 20%-99%+EGCG 20%-95%+Catechins 20 ... %-90%+Caffeine 1%-8%Decaffeinated Green Tea ExtractPolyphenols98%UVCatechins50%,60%,70% ... HPLCCaffeine0.5%HPLCAll combination for Polyphenols, Catechins, EGCG and Caffeine,For example Polyphenols 98%+EGCG 50%-70%+Catechins 80%-90 ...