Changde Yungang Biotechnology Co., Ltd. is an export-oriented hi-tech enterprise. Now, our main products including Ursodeoxycholic acid, chenodeoxycholic acid, Hyodeoxycholic acid, Cholic acid, Deoxycholic acid, Dehydrocholic acid and bacteria quarantine series such as bile salts of cow, bile salts 3, bile salts of fowl, cattle goll powder, bile powder of pig, deoxidization sodium cholate, and so on.