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/
Aikon International Limited
Telephone025-66113011 18112977050
Websitehttp://www.aikonchem.com
Guangzhou Yuheng Pharmaceutical Technology Co., Ltd
Telephone +8613580539051
Websitehttp://www.yuhengpharm.com/
Jiaxing Hengrui Biotechnology Co. LTD
Telephone0573-0573-82672231 13757365595
Websitehttp://www.jxruihengbio.com/