... green tea. And our tea polyphenols extract has three forms: powder, pellet, capsule. And we also can make the tea ... use, etc. 4.Production FeaturesPhysical property of tea polyphenols powder: Powder in green or light yellow, easy dissolving in water or ... degenerative if touching strong acid, strong alkali, lighting in sun shining, over heating, or transition metal materials.Safety: Without any ...