RK BIO-TECH Co.,Ltd.(H.K.) is a new-type enterprise with scientific research, development, production and trade. We have our factories in Shaanxi, Jiangsu ang Zhejiang province, and is professionally used to custom and process production. Main products can be divided into three aspects including plant extraction base in Shaanxi, pharmaceutical material base in Jiangsu and sterides and additive production base in Zhejiang. Sale head office is located in Hangzhou. The company adheres to the tenet of people oriented and credit and abiding by promise, and wishes all healthy..