Shaanxi Yongyuan Bio-Tech Co., Ltd. headquartered in Xi'an,is an expert in the field of biochemistry, pharmacology and analysis of herbs and natural compounds. We are mainly engaged in herbal extracts, natural pigment, natural sweeteners, animal extracts, fermentation of raw materials and other natural health products, our products are used in functional food, health food , drugs, cosmetics, animal feed, veterinary drugs, biological pesticides, environmental products. We believe that a good sour...