The DJA series gas-top pressure fire-fighting water supply equipment is a new type of fixed fire extinguishing device independently developed by our company in accordance with the Public Security Industry Standard of the People's Republic of China GA30.4-2008. It meets the requirements of "Part 4: Gas-top pressure fire-fighting water supply equipment of Fixed Fire-fighting Water Supply Equipment Performance Requirements and Test Methods." It can provide fire-fighting water for the initial 10 minutes of a fire situation. This product consists of a Wuli tank, a stable pump system, a gas cylinder system, a gas pump, and a control system. The volume of the tank is 1/3 to 1/5 of a standard gas discharge wall, occupying less space than a similar emergency fire-fighting gas water supply system and providing stable water supply. It is safer and more reliable, serving as a new alternative to high-level fire water tanks or ordinary gas storage tanks. It is currently the ideal large-scale emergency fire-fighting gas water supply equipment.