Sigma-Aldrich
Telephone021-61415566 800-8193336
Websitehttps://www.sigmaaldrich.cn
Tianjin Scaxchem Limited Compnay
Telephone022-022-25327698 18920479040
Websitehttp://www.cosychem.com
Energy Chemical
Telephone021-58432009 400-005-6266
Websitehttp://www.energy-chemical.com
