J & K SCIENTIFIC LTD.
Telephone010-82848833 400-666-7788
Websitehttp://www.jkchemical.com
ChemStrong Scientific Co.,Ltd
Telephone0755-0755-66853366 13670046396
Websitehttp://www.chem-strong.com
Beijing OKA biological technology co., LTD
Telephone010-62971590 18548936886
Websitehttp://www.bjoka-vip.com/
Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226 13028896684
Websitehttps://www.rrkchem.com
TOSUN PHARM
Telephone020-61855200 13326451905
Websitehttp://www.toref.cn/
Cato Research Chemicals Inc.
Telephone020-81960175-677 18933936954
Websitehttps://www.cato-chem.com/
Hubei Qingbei Yunyan Pharmaceutical Technology Co., Ltd
Telephone 18162595016
Websitehttps://www.chemicalbook.com/supplier/25457231/
China National Standard Pharmaceutical Corporation Limited
Telephone +8615391658522
Websitehttps://www.standardpharm.org.cn/
