Greenwoods Herbal Extract Co.,Ltd. is a professional manufacturer extracting, researching, developing, producing, processing and trading in natural plants, a modern foreign trade enterprise with high science and technology. It mainly served for hygienical drugs, foods, beverage and cosmetics industries.And now scores of herbal extracts are availebal in our company, such as Red Clover Extract Powder, Echinacea Extract Powder, St. John's Wort Extract Powder, Grape seed Extract Powder, Ginkgo biloba Extract Powder, Gynostemma Extract Powder, Lycopene, 5-HTP, HuperzineA, Soybean isoflavones and so on.