Changzhou Dacheng Industrial Gas (常州大成工业气体有限公司) was founded in 2013 in the Jintan Economic Development Zone, Changzhou. From a 10,000 m² site it produces and supplies bulk industrial gases, standard calibration mixtures, 5N high-purity gases, specialty gases and fire-extinguishing gases, and runs its own cylinder testing station. Its gas extinguishing agents hold fire product certifications 5982026ZY110089 (carbon dioxide), 5982026ZY110090 (IG-100) and 5982026ZY110091 (IG-541) from the Tianjin Fire Research Institute of the Ministry of Emergency Management.