Shanghai Yuanding Chem. Sci. & Tech. Co., Ltd.
Telephone21-57721279
Websitehttp://www.shydtec.com
Xishi Chemical (Shanghai) Co., Ltd.
Telephone021-60499358 13661956116
Websitehttp://www.cs-pharm.com
Cato Research Chemicals Inc.
Telephone020-81960175-877 18933936954
Websitehttps://www.cato-chem.com/
Shanghai Send Pharmaceutical Technology Co., Ltd.
Telephone+86-021-50266790 Q2816483246
Websitehttp://www.shsendpharma.com
https://hanhongsci.com/
Telephone021-54306202 18917919676
Websitehttps://www.hanhongsci.com/