Dongying Tianrun Biotechnology Co.Ltd,locates at Shengli Industrial Zone of Dongying City,Shandong Province.Our products including:vitamin D2,D3,Hyaluronic Acid,Ergosterol,S-adenosyl-L-methionine,Glutathione and other products,the products made with pure natural plant as raw by photochemistry method and high density fermentation Technology,its quality full conforms to national pharmacopoeia,food,and feed standard,and purity,characteristic,Class,specifications,packaging can choose by the customer.Now our products not only sell well at home,but aslo at abroad such as Euro,America,Asia etc.