Yellowstone Schmidt biochemistry co., Ltd. Former Daye steel group Yangtze River chemical industrial co., Ltd., citric acid plant in Huangshi city, founded in 1965, is China's largest manufacturer of specialized production of citric acid and citric acid salt, the main products include citric acid monohydrate, citric acid anhydrous, sodium citrate, potassium citrate and other products, annual production capacity of 60000 tons, registered trademark for the Yangtze River.
company existing staff more than 600 people, of which 106 people with senior professional and technical personnel, with various types of testing nearly 500 sets of main production equipment, introduced Germany Mann Mann company and Austria anhydrous citric acid for aogaobu and it is the company's advanced production lines and production lines in China a total of 6, dried potatoes, corn as the main feedstock, bio-fermentation process, refine refine but.
ISO9001-2000 operation of the quality system within the company, strictly according to the international standards organization production, products meet a variety of criteria: China national standard GB/T8269-1998, CP1995,CP2000 Chinese Pharmacopoeia standards, United Kingdom Codex BP93,BP98, the European standard EC330, United States standards, such as FCC,USP23,USP24. 
in 1979 won the title of China light industry products.
1988 advanced export enterprise by China light industry Ministry granted the Ministry.
in 1993, was named by the National Bureau of China's 500 largest foods manufacturers.
1997 recommended by citric acid citric acid for the China fermentation Industry Association Vice Director unit.
in 1999, ORTHODOX JEWISH COUNCILVAAD HAKASHRUS demonstration.
in 2001 passed a comprehensive quality management system.  

products are exported to North America, Japan, Western Europe, Middle East, South America, Africa, and all over the world, such as Southeast Asia, export rate above 90%.
our instructions from the "quality excellence, customer first, benefit-sharing," the purpose, dedicated to serving our customers and sincerely thank the friendly cooperation and support of friends at home and abroad to achieve common development and common prosperity.