J & K SCIENTIFIC LTD.
Telephone010-82848833 400-666-7788
Websitehttp://www.jkchemical.com
Chemsky（shanghai）International Co.,Ltd.
Telephone021-50135380
Websitehttp://www.shchemsky.com
Wuhan NewRadar Special Gas Co., Ltd.
Telephone027-82652715 18986267605
Websitehttp://www.nrdqiti.com/
Shenzhen Polymeri Biochemical Technology Co., Ltd.
Telephone+86-400-002-6226 +86-13028896684;
Websitehttps://www.rrkchem.com
DWS Specialty Gas Co., Ltd
Telephone131-9467-7939 4001882517
Websitehttp://www.dwsgases.com/index.html
Wuhan Baisida Gas Co., Ltd
Telephone 15072387200
Websitehttp://www.nrdqiti.com
Shanghai Jasper Gas Co., Ltd.
Telephone021-13218776790 13218776790
Website
