The wheeled CO2 fire extinguishers Wheeled CO2 fire extinguishers use compressed carbon dioxide as fire extinguishing agents. When pressing the startup device, the compressed carbon dioxide is quickly released by the nozzle. The CO2 fire extinguisher releases quickly, reducing the oxygen concentration in the air, so that the flame cannot be burned. Usage of CO2 fire extinguishers As long as the fire extinguisher is raised or carried to the fire site, about 5 meters away from the combustion, pull out the fire extinguisher safety pin, hold the handle at the root of the horn with one hand, and grasp the pressure handle of the valve with the other hand. For carbon dioxide fire extinguishers without spray hoses, the horn should be positioned 70-90 degrees toward the upper plate. When using, do not grasp the outer wall of the horn or the metal connecting pipe directly with your hand to prevent your hand from being frostbitten. When extinguishing the fire, when the flammable…