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
Beijing Qinling Pharmaceutical Co., Ltd.
Telephone010-61241352 18901327973
Websitehttp://www.qlmed.com/
Shanghai Aladdin Biochemical Technology Co.,Ltd.
Telephone +86-18521732826
Websitehttp://www.aladdin-e.com/