J & K SCIENTIFIC LTD.
Telephone010-82848833 400-666-7788
Websitehttp://www.jkchemical.com
Nanjing Chalf-Pharm Technology Co., Ltd.
Telephone025-57018978 18251899859
Websitehttp://www.chalf-pharm.com
Shanghai Qiao Chemical Science Co., Ltd
Telephone021-58892003
Websitehttps://www.chemicalbook.com/supplier/10168672/1.htm
Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226 +86-13028896684;
Websitehttps://www.rrkchem.com
Shanghai Haohong Scientific Co., Ltd.
Telephone400-400-8210725
Websitehttps://www.leyan.com/