There are several compounds extracted from green tea including catechins which contain an enormous amount of hydroxyphenols that are easily oxidized, congregated and contracted, which explains its good anti-oxidation effect. Its anti-oxidation effect is 25-100 times as strong as those of vitamin C and E. It is widely used in medicines, agriculture, and chemical and food industries. This extract prevents cardio-vascular disease, lowers the risk of cancer, and decreases blood sugar and blood pressure, as well as viruses. In the food industry, the anti-oxidation agent used for preserving food and cooking oils. Specifications: 1) Product name: green tea extract (low pesticide) 2) Extracted part: leaves 3) Green tea wxtract 98% a) Total tea polyphenols: > 98% b) Total tea catechins: > 90% c) EGCG: > 60%-70% d) Caffeine: < 0.5% e) Appearance: light yellow powder 4) Green tea extract 80% a) Total tea polyphenols: > 80% b) Total tea catechins: > 55% c) EGCG: > 35% d) Caffeine: <1%-12% e) Appearance: light yellow to brown-yellow powder 5) Green tea extract 70% a) Total tea polyphenol: > 70% b) Total tea catechins: > 50% c) EGCG: > 25%-30% d) Caffeine: < 1%-12% e) Appearance: light yellow to brown-yellow powder 6) Green Tea Extract 60% a) Total tea polyphenol: > 60% b) Total tea catechins: > 40%-50% c) EGCG: > 20%-25% d) Caffeine: < 1%-10% e) Appearance: brown-yellow powder