Central China Special Gas (CCSG) Co., Ltd
Telephone0734-8755555 15674722888
Websitehttp://www.ccsg.cn/
Foshan Zhicheng Gas Co., Ltd.,
Telephone 18098161577
Websitehttp://www.zcqiti.com
Wuhan Baisida Gas Co., Ltd
Telephone 18627049038
Websitehttp://www.nrdqiti.com
Merck KGaA
Telephone21-20338288
Websitehttp://www.sigmaaldrich.cn
