J & K SCIENTIFIC LTD.
Telephone18210857532 18210857532
Websitehttps://www.jkchemical.com
Chemsky（shanghai）International Co.,Ltd.
Telephone021-50135380
Websitehttp://www.shchemsky.com
S.Z. PhyStandard Bio-Tech. Co., Ltd.
Telephone0755-83725681-603
Websitehttp://www.phystandard.com.cn
Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226
Websitehttps://www.rrkchem.com
Jinan Ruisi Pharmaceutical Technology Co., LTD
Telephone0531-0531-69900633 19963472814
Websitehttps://www.chemicalbook.com/ShowSupplierProductsList31265/0_EN.htm
Suzhou Meishi Biotechnology Co., Ltd.
Telephone 1173954148q
Websitehttps://www.chemicalbook.com/ShowSupplierProductsList1822805/0_EN.htm
LGC Science (Shanghai) Ltd.
Telephone17717235263 17717235263
Websitehttps://www.lgcstandards.com/CN/en/
