... -9% (3)Tea polyphenols>80%,Catechin>55%,EGCG >35%,caffein1-10% (4)Tea polyphenols>70%,Catechin>50%,EGCG 25-30%,caffein1 ... % (5)Tea polyphenols>30-50%,Catechin10-40%,EGCG 8-20%,caffein1-10%[Assay]UV[Characters]Light yellow to yellowish-brown powder,taste ...