J & K SCIENTIFIC LTD.
Telephone010-82848833 400-666-7788
Websitehttp://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 +86-13028896684;
Websitehttps://www.rrkchem.com
Jinan Xinzheng Pharmaceutical Technology Co., Ltd.
Telephone0531-88798968 18615218958
Websitehttp://www.xinzhengchem.com/
Shaanxi Dideu Medichem Co. Ltd
Telephone029-61856358 15229202216
Websitehttps://www.dideu.com/
