J & K SCIENTIFIC LTD.
Telephone010-82848833 400-666-7788
Websitehttp://www.jkchemical.com
Changzhou Hopschain Chemical Co.,Ltd.
Telephone0519-85528066 13775048983
Websitehttp://www.hopschem.com/
Beijing Haite lesk Technology Co., Ltd
Telephone15210893940; 15116916250
Websitehttps://www.chemicalbook.com/ShowSupplierProductsList804170/0.htm
Guangzhou Yuheng Pharmaceutical Technology Co., Ltd
Telephone +8613580539051
Websitehttp://www.yuhengpharm.com/
Aikon International Limited
Telephone 18651614124
Websitehttps://www.aikonchem.com/