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.

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 choosing a fire extinguisher, we should also pay attention to its quality and brand. High quality fire extinguishers not only have better fire extinguishing effects, but also have a longer service life, which can better ensure our safety. Therefore, we should choose well-known brands and certified products to ensure their performance and quality.

Dry powder fire extinguishers are suitable for solid material fires, liquid fires, and gas fires. They have good extinguishing effects and are easy to operate, making them widely used in various places. Foam fire extinguishers are suitable for liquid fires. They can generate foam to cover the surface of combustibles and isolate air to extinguish the fire. Carbon dioxide fire extinguishers are suitable for electrical fires, as their non-conductive properties prevent secondary damage to electrical equipment during the extinguishing process.