J & K SCIENTIFIC LTD.
Telephone18210857532; 18210857532
Websitehttps://www.jkchemical.com
Shanghai YuanYe Biotechnology Co., Ltd.
Telephone021-61312847; 18021002903
Websitehttp://www.shyuanye.com
TOSUN PHARM
Telephone61855200 13326451905
Websitehttp://www.toref.cn/
Henan Weitixi Chemical Technology Co., Ltd
Telephone0371-53370800 18037197114
Websitehttps://www.chemicalbook.com/supplier/24683891/
Shanghai Tachizaki Biomedical Research Center
Telephone 18014399201
Websitehttp://www.chemlab-tachizaki.com/
Hubei Chenghai Chemical Co., Ltd
Telephone027-59220433 18327245847
Websitehttps://www.hbchenghai.com
Shanghai Jieshikai Biotechnology Co. , Ltd.
Telephone021-57520305 13795461237
Websitehttps://www.jskchem.com
Guangzhou Tosun Pharmaceutical Limited
Telephone+86-18124244216 +86-18124244216
Websitehttp://toref-standards.com