J & K SCIENTIFIC LTD.
Telephone18210857532 18210857532
Websitehttps://www.jkchemical.com
Chemsky（shanghai）International Co.,Ltd.
Telephone021-50135380
Websitehttp://www.shchemsky.com
Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226
Websitehttps://www.rrkchem.com
Nanjing wangzhixing Pharmaceutical Technology Co., Ltd
Telephone 18569809817
Websitehttp://www.wzxchem.com
Energy Chemical
Telephone021-58432009 400-005-6266
Websitehttp://www.energy-chemical.com
Nanjing Huanuo Biomedical Technology Co., Ltd
Telephone 17715262260
Websitehttp://www.hnstandards.com/
Hubei Moco Chemical Co., Ltd.
Telephone18627753421; 18627756402
Websitehttp://www.molcoo.com/
Cato Research Chemicals Inc.
Telephone81960175 18933936954
Websitehttps://www.cato-chem.com/
Shenzhen ruikai de biotechnology co., ltd.
Telephone0755-61348847 17820674378
Websitehttp://www.real-chemstandards.com.cn/
TLC Pharmaceutical Standards Ltd.
Telephone 18012923235
Websitehttps://www.tlcstandards.com/
