Marine CO2 fire extinguishing system is a kind of fire protection equipment widely used in international vessel circles, which can be used for fire protection of offshore platform, machinery spaces of ship, pumps room, oil tanks, power generation room, paint room, woodworking room and kitchen. SGD series marine CO2 fire extinguishing system is a kind of ideal fire extinguishing equipment, which meets the requirement of national environmental protection. Its performance indexes with advanced design meet the requirements of national standard GB16669-1996, General Technical Conditions of CO2 fire extinguishing system and its parts, China Classification Society and Vessel Inspection Bureau Rulers for the Construction of Inland River Steel Ship (CCS and ZC) and Safety of Life at Sea.