Hangzhou Best Gas (杭州贝斯特气体有限公司) is part of the Hangzhou Best Gas Group in Fuyang, Hangzhou. It produces high-purity electronic gases, calibration standard gases, liquefied and bottled industrial gases, and medical and food-grade gases. The group runs seven R&D centres and a fleet of 120 transport vehicles. Its fire-industry range covers IG-541 and carbon dioxide extinguishing agents. Its IG-100, IG-541 and carbon dioxide fire extinguishing agents hold fire product certifications 5982026ZY110083, 5982026ZY110081 and 5982026ZY110082 from the Tianjin Fire Research Institute of the Ministry of Emergency Management.