J & K SCIENTIFIC LTD.
Telephone010-82848833 400-666-7788
Websitehttp://www.jkchemical.com
Telephone821-50328103-801 18930552037
Websitehttps://www.chemicalbook.com/ShowSupplierProductsList13285/0.htm
Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226 +86-13028896684;
Websitehttps://www.rrkchem.com
Shanghai Haohong Scientific Co., Ltd.
Telephone4008210725 17717813675;
Websitehttps://www.leyan.com/
Shanghai Easy CDMO Co.,Ltd
Telephone021-61734564 13854185395;
Website