J & K SCIENTIFIC LTD.
Telephone18210857532 18210857532
Websitehttps://www.jkchemical.com
Chemsky（shanghai）International Co.,Ltd.
Telephone021-50135380
Websitehttp://www.shchemsky.com
Shanghai T&W Pharmaceutical Co., Ltd.
Telephone+86 21 61551611
Websitehttp://www.trustwe.com
Shanghai TaoSu Biochemical Technology Co., Ltd.
Telephone021-33632979
Websitehttp://www.tsbiochem.com
Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226
Websitehttps://www.rrkchem.com
Cato Research Chemicals Inc.
Telephone81960175 18933936954
Websitehttps://www.cato-chem.com/
Hubei YoungXin Pharmaceutical Tech Co.,Ltd.
Telephone0714-3999001 19171453112
Websitehttp://www.yongstandards.com/
Hubei Science Chemical Co., Ltd
Telephone15994282563 15994282563
Website
Shandong Ziyi Pharmaceutical Co., Ltd.
Telephone 17860786593
Website
Nanjing Finetech Chemical Co., Ltd.
Telephone025-85710122 17714198479
Websitehttp://www.fine-chemtech.com
