Speaking of fire extinguishers, it is estimated that everyone knows that they are used to put out fires, but how to use them correctly? Here are several different ways to use a fire extinguisher: 1. Usage of dry powder fire extinguisher: Scope of application: It is suitable for extinguishing fires of flammable and combustible liquids and flammable and combustible gases, as well as fires of electrical equipment. 1. Drag the handle with your right hand, drag the bottom of the fire extinguisher with your left hand, and gently take out the fire extinguisher. Go to the scene with a fire extinguisher in your right hand. 3. Remove the lead seal. 4. Unplug the safety pin. Hold the nozzle with your left hand. 6. At a distance of two meters from the flame, press the handle with the right hand and swing the nozzle with the left hand to cover the whole combustion area. 2. The use of foam extinguisher is mainly suitable for fighting all kinds of oil fires. 1. Drag the handle with your right hand, drag the bottom of the fire extinguisher with your left hand, and gently take out the fire extinguisher. 2. Take the fire extinguisher to the scene with your right hand. 3. Cover the nozzle with your right hand and hold the bottom edge of the cylinder with your left hand. 4. Turn the fire extinguisher upside down and make it vertical, shake it up and down several times, and then release the nozzle. 5. Grasp the ear of the barrel with the right hand, grasp the bottom edge of the barrel with the left hand, point the nozzle towards the combustion area, stand eight meters away from the fire source and spray continuously around the flame until the fire is extinguished. 6, after the fire, put the fire extinguisher on the ground, the nozzle down. Three, the use of carbon dioxide fire extinguisher is mainly suitable for all kinds of flammable, flammable liquid, flammable gas fire, but also can put out the initial fire of instruments, books and archives, handicrafts and low-voltage electrical equipment. 1. Hold the handle with your right hand. 2. Take the fire extinguisher to the scene with your right hand. 3. Remove the lead seal. 4. Unplug the safety pin. 5. Stand two meters away from the fire source. With a megaphone in his left hand. Press the knob with your right hand. 6. Spray to the root of the fire source and keep pushing forward until the flame goes out.