... %HPLCCaffeine1%,3%,5%,8%HPLCAll combination for Polyphenols, Catechins, EGCG and Caffeine,For example Polyphenols 20%-99%+EGCG 20%-95%+Catechins 20 ... %,85%,90%HPLCCaffeine0.5%HPLCAll combination for Polyphenols, Catechins, EGCG and Caffeine,For example Polyphenols 98%+EGCG 50%-70%+Catechins 80%-90 ...