... composed by free catechin ( D, L-C, EGC ) and ester type catechin ( EGCG, GCG, ECG ).Spec: 50% 60% 70% 80% 90 ... UVAppearance: brown, light yellow, yellow green powder, bitter tasteInner packing: double-layer plastic bagOuter packing: export drumN.W.: 25kgG.W.: 28kgDimensions: 0 ...