Shanghai Kewel Chemical Co., Ltd.
Telephone021-64609169 18901607656
Websitehttp://www.kewelchem.com/
Artis Biotech Co. Ltd.
Telephone19138486554 18108108965
Websitehttp://www.artis-standards.com/
Hubei Co-prosperity Medicine Technonlogy Co., Ltd
Telephone2383948258 19172820304
Websitehttps://www.chemicalbook.com/supplier/24062231/
TLC Pharmaceutical Standards Ltd.
Telephone18012923235; 18012923235
Websitehttp://www.tlcstandards.com
Hubei Danding Pharmaceutical Technology Co., Ltd
Telephone17701422016 17701422016
Websitehttp://www.hbdandingyy.com