Shandong Sito Bio-technology Co., Ltd. is a China-based company and mainly engaged in manufacture of raw material of steroidal drugs. The Company produces its products via genetic engineering and microbial transformation technology. The main products include androstenedione (AD or 4AD), androstenedione (ADD), 9-hydroxyandrostenedione (9OH-AD), hydroxy progesterone, and other steroidal drugs core raw materials. Steroidal drugs are widely applied in the treatment of rheumatoid arthritis, bronchial asthma, eczema and other skin diseases and allergic shock diseases. The Company operates its businesses primary in domestic market.