When using portable fire extinguishers, it is necessary to master the correct operating methods. Firstly, after discovering a fire, it is important to quickly determine the size of the fire and the type of fire source, and select the appropriate fire extinguisher. Then, follow the steps of "pulling, gripping, aiming, and sweeping": remove the safety pin, hold the nozzle and aim at the base of the flame, aim at the source of the fire, and gradually advance the left and right sweeping until the flame is extinguished. During the firefighting process, one should remain calm, pay attention to their own safety, and avoid the spread of the fire.

When using a fire extinguisher, we need to follow certain operating procedures. Firstly, after discovering a fire, it is important to quickly determine the size of the fire and the type of fire source, and select the appropriate fire extinguisher. Then, operate in the order of "pulling, gripping, aiming, and scanning". Pull out, that is, pull out the safety pin of the fire extinguisher; Grip, that is, grip the nozzle and align it with the base of the flame; Aiming, that is, aiming at the source of fire; Sweeping, that is, sweeping left and right, gradually pushing forward until the flame is extinguished. During the firefighting process, it is important to remain calm, pay attention to personal safety, and avoid letting the fire spread.