category：standard herb extracts appearance:light brown powder green tea powder extract an antioxidant, widely used in the area of improving human immuno competence, anti-aging, anti-radiation and anti-cancer. function: 1. cancer prevention 2. cardioprotection; prevention of atherosclerosis 3. prevention of tooth decay and gum disease 4. liver protection 5. anti-platelet aggregation to prevent blood clotting 6. kidney function improvement 7. protection and restoration of immune system 8. inhibition of infectious pathogens 9. to aid digestion and carbohydrate utilization 10.cellular and tissue antioxidant we provide green tea extract in many kinds of specifications upon clients' special requirement some specifications are as follows. a) tea polyphenols: 98%, 95%, 90%,80% b) catechins: >80%, 60%, 55%, >50%, >40%, >30% c) egcg ≥45% d)caffeine: <0.5%, <1%, <3%, <8%, <10% packing: 25kg/fiberboard drum with double-layer plastic bag inside.or dependng on customers requirement.