Shandong Tonghui Biotechnology co., LTD. founded in 2011 is located in Luyang Industrial Zone, Wudi County, Binzhou City, Shandong Pro. China, which covers an area of about 30000 m2 and a total construction area of about 20000 m2. It is the private high-tech enterprise Set R & D, production and sale.The enterprise is the leading manufacturer specializing in the production of vitamin D3 in China, which have the complete industrial chain of Cholesterol, 7-Dehydrocholesterol, vitamin D3 oil and vitamin D3 power. We also have first-degree manufacturing equipment, topping technology and technical personnel. Now it is certified by ISO, FAMI-QS ETC. and widely used in medicine, food and feed industry. Now the production capacity reaches to 1000 tons per year. Now the products are mainly exported to Europe and the United States, and the other is sold to the domestic market. Over the years the enterprise has established good cooperation with the well-known feed enterprises both at home and abroad, and win high praises from the customers. In the future, the enterprise shall continue to provide high-quality products, first-class service, and warmly welcome new and old customers at home and abroad to visit, investigate and negotiate business, and achieve common development.