To ensure the effectiveness of portable fire extinguishers, we need to regularly maintain and inspect them. Check whether the pressure of the fire extinguisher is normal, whether the nozzle is unobstructed, and whether the bottle body is corroded or damaged. Meanwhile, it is important to pay attention to the shelf life of fire extinguishers and promptly replace expired or damaged ones.

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.

The portability of portable fire extinguishers is one of its major advantages. Compared to large fixed fire extinguishing systems, portable fire extinguishers are compact, lightweight, and easy to carry and store. Once a fire occurs, people can quickly take out the fire extinguisher to put out the fire, effectively preventing the fire from spreading.

Portable fire extinguishers are lightweight and easy to carry firefighting equipment, widely used in various places such as homes, offices, factories, schools, etc. It can quickly play a role in the early stages of a fire, effectively extinguish small fire sources, prevent the spread of the fire, and protect people's lives and property safety.

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.