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.

In addition to using fire extinguishers correctly, we should also strengthen our awareness of fire prevention and improve our knowledge of fire safety. Regularly check the effectiveness of fire extinguishers to ensure they are in good condition. At the same time, strengthen the maintenance and upkeep of fire-fighting facilities to ensure that they can be quickly activated in the event of a fire. In addition, we also need to learn fire escape skills and master the correct escape methods, so that we can quickly escape the scene in the event of a fire.