J & K SCIENTIFIC LTD.
Telephone010-82848833 400-666-7788
Websitehttp://www.jkchemical.com
Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226 +86-13028896684;
Websitehttps://www.rrkchem.com
Wuhan Yuanxing Biomedical Technology Co.,
Telephone 13642377995
Websitehttps://www.chemicalbook.com/ShowSupplierProductsList329594/0.htm
Merck KGaA
Telephone(+86) 21 2033 8288
Websitehttp://www.sigmaaldrich.cn
Aikon International Limited
Telephone 18651614124
Websitehttps://www.aikonchem.com/