We provide Resveratrol in purity 50% - 98%, the appearance of such products are brown or white powder. It is extracted from Polygonum cuspidatum and the main functions are anti-aging, regulate blood lipids, cardiovascular protection, anti-tumor activity, anti-bacterial anti-viral, anti-hepatitis; by inhibiting platelet aggregation and reduce the dual role of lipids prevention of cardiovascular diseases; reduce myocardial injury and chronic ischemia; with lower serum cholesterol and triglyceride deposition in liver function, significantly increased serum high density lipoprotein levels and inhibition of LDL oxidation