Shenyang Hongsheng Gas (沈阳洪生气体有限公司) leads the Hongsheng Gas Group, formerly Liming Gas Group, which was founded in 1993. The group produces industrial, medical, specialty, food, fire suppression and hydrogen gases. It runs air separation plants in Harbin, Shenyang, Qiqihar, Langfang, Daqing and Renqiu, and operates a fleet of more than 400 gas transport vehicles across northeast and north China. Its IG-541, IG-100 and carbon dioxide extinguishing agents hold fire product certifications 5982026ZY110057, 5982026ZY110056 and 5982026ZY110061 from the Tianjin Fire Research Institute of the Ministry of Emergency Management.