Shanghai Yaojing Auxiliary Co., Ltd., founded in March 1991, is located in European Industrial Park, Zhuangxing Town, Fengxian Dist., Shanghai, China. Close to major expressways, the company enjoys convenient transportation. The company has an occupied floor area of 5600 sq. meters, building area of 3400 sq. meters and greening area of 1200 sq. meters. Currently, our major product is Vitamin D3, which is used as feed additive to enhance the animals' absorbing of calcium and phosphor to boost t...