Hubei Guangji Pharmaceutical. 

Hubei Guangji Pharmaceutical Co., Ltd. engages in the production and operation of pharmaceutical raw materials, pharmaceutical preparations, and feed additives. It specializes in production of vitamin B2, B6 and pharmaceutical products. Vitamin B2, is also known as riboflavin. it is used in medicine APIs (Active Pharmaceutical Ingredient), feed additives, and food additives. Its products are divided into raw material series products and preparation series products. The series of raw materials are pharmaceutical grade, food grade, 98% feed grade, 80% feed grade nuclear yellow and riboflavin sodium phosphate. The preparation series products are oral solid preparations and large infusions. The company was founded on May 28, 1993 and is headquartered in Wuxue, China.