J & K SCIENTIFIC LTD.
Telephone010-82848833 400-666-7788
Websitehttp://www.jkchemical.com
Shenzhen Regent Biochemical Technology Co., Ltd.
Telephone0755-0755-85201366 18938635012
Websitehttp://www.regentsciences.com/
Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226 +86-13028896684;
Websitehttps://www.rrkchem.com
Shanghai Yifei Biotechnology Co. , Ltd.
Telephone021-65675885 18964387627
Websitehttp://www.efebio.com
Shaanxi Xihua Chemical Industry Co., Ltd
Telephone029-89586681 15829046862
Website