Xian Tonking Biotech Co., Ltd. As a professional high-tech enterprise, Tonking Biotech is engaged in the research, manufacturing and distribution of plant extracts and functional food additives. Located at the foot of Qinling Mountain, a natural treasure of plants and herbs in China, Tonking Biotech is endowed with the advantage of high quality raw materials supply.I with state-of-the-art equipment and facilities, we are equipped with the ability to produce hundreds of kinds of high quality natural derived products.i our products are manufactured according to the regulations of Kosher and Halal system. With unremitting efforts for years, Tonking Biotech has become an experienced manufacturer of natural products and plant extracts in China.Many kinds of products have been supplied to Europe, North America and Asia etc. each year. We believe quality is essential to success and hope our natural and healthy products can make your life perfect.