Zhejiang YaoFi Bio-tech.CO.,LTD. is specializing in R&D,production and salesfor food additive and feed additive. YaoFi is located in Deqing Economic development Zone near Moganshan . YAOFI has two production bases.One is for food additive that the main productions are L-Glutathione,Beta-Glucan and essential trace element Enriched Yeast (such as Selenium、Zinc、Chromium、Iron、Cooper and so on).The other one is for feed additive, the main productions are Chromium Pico Linate、Betaine、Zoalene、Arsenic Acid、Roxarsone、Sodium Butyrate. Furthermore,We have 4 US FDA certifications. We set up a high-tech R&D team whichincludes Professors with PhDs and foreign experts to ensure quality, perfection and efficiency in production of our products and services .We also established a longterm cooperation with Zhejiang University,Zhejiang  university of Technology, and Chinese Academy of Sciences. So we will continue to adhere to the scientific and technological innovation, continuous development of new