J & K SCIENTIFIC LTD.
Telephone010-82848833 400-666-7788
Websitehttp://www.jkchemical.com
Shanghai Synthfine Chemical Co.,Ltd
Telephone 15921303235
Websitehttp://www.synthfine.com
Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226 +86-13028896684;
Websitehttps://www.rrkchem.com
Shanghai Naiys Biological Technology Co., Ltd
Telephone 18321139117
Websitehttps://www.chemicalbook.com/ShowSupplierProductsList1927974/0.htm
Shanghai Aladdin Biochemical Technology Co.,Ltd.
Telephone +86-18521732826
Websitehttp://www.aladdin-e.com/