J & K SCIENTIFIC LTD.
Telephone010-82848833 400-666-7788
Websitehttp://www.jkchemical.com
Grice Rand (Tianjin) Pharmaceutical Co., Ltd.
Telephone022-83705301 13752403750
Websitehttp://www.grasslandtj.com
Amadis Chemical Company Limited
Telephone571-89925085
Websitehttp://www.amadischem.com
Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226 +86-13028896684;
Websitehttps://www.rrkchem.com
Beijing InnoChem Science & Technology Co., Ltd.
Telephone15652467323 15652467323
Websitehttps://www.inno-chem.com.cn