Sunwin Stevia International, Inc. produces and sells stevioside, a natural sweetener; and other pharmaceutical products primarily in the People's Republic of China. It operates through two segments, Natural Sweetener (Stevioside); and Corporate and Other Pharmaceutical. The company produces and sells various steviol glycosides with rebaudioside A and stevioside as the principal components. It provides Steviosin, a low calorie stevia extract for medicinal use; and OnlySweet, a zero calorie, dietary supplement to food and drug manufacturers, and ingredient distributor foreign trade companies. The company also produces and sells Metformin, a medication for the treatment of type 2 diabetes. Sunwin Stevia International, Inc. is based in Qufu, China.