Henan Alfachem Co.,Ltd.
Telephone0371-55051623 18137891487
Websitehttps://www.chemicalbook.com/supplier/14555231/
chemmole
Telephone400-168-9330 15013243073
Websitehttp://www.chemmolemall.com/
Shanghai Haohong Scientific Co., Ltd.
Telephone400-8210725 4008210725
Websitehttps://www.leyan.com/
Jilin Chinese Academy of Sciences-yanshen Technology
Telephone 18143011203
Websitehttp://www.chemextension.com/
Shandong Dayou Pharmaceutical Research and Development Co., Ltd.
Telephonedayouchem@126.com 15165037910
Website