Green tea extract For centuries, green tea has been prized for its delicate flavor and Exceptional health benefits. Now modern science has revealed the Chemistry behind the lore: Green tea contains high levels of Polyphenols and catechins- highly potent antioxidants. Ruiyuan's TeaVitaTM Premium Quality Green Tea Extracts are Produced in our GMP certified facilities from premium-grade Chinese green tea. And, to insure that you getthe phytonutrients Most responsible for green tea's biological effects, our extracts are Standardized for polyphenols, catechins, and caffeine. TeaVitaTM Products: Standard Polyphenols: Catechins, Caffeine Green Tea Extract Polyphenols 40%: >40%, 20-25%, 10-15%, 7-10% Green Tea Extract Polyphenols 50%: >50%, 30-40%, 10-15%, 7-10% Green Tea Extract Polyphenols 60%: >60%, 40-45%, 10-15%, 7-10%, <3% Green Tea Extract Polyphenols 70%: >70%, 45-55%, 10-15%, 7-10%, <3% Green Tea Extract Polyphenols 80%: >80%, 55-65%, 10-15%, 7-10%, <3% Green Tea Extract Polyphenols 90%: >90%, >70%, 7-10%, <3%, <1% Green Tea Extract Polyphenols 95%: >95%, >75%, 7-10%, <3%, <1% Green Tea Extract Polyphenols 98%: >98%, >80%, <3%, <1% Green Tea Extract Polyphenols 99%: >99%, >90%, <1%, <0.5%, 0.3% Green Tea EGCG: EGCG content: 40%, 50%, 60%, 70%, 80%, &95%