What are the main components of a fire extinguisher?

Fire extinguishers are common items in our lives, and can be seen in many public places, and there are fire extinguishers in the corridors where everyone lives. There are many types of it, and each ingredient is different. So, what are the main components of dry powder fire extinguishers? What do I need to pay attention to when using a dry chemical fire extinguisher? Let us take you to find out. It is sodium bicarbonate, also known as an inorganic salt. This substance can prefabricate the combustion material, interrupt the burning object, and has a strong fire extinguishing effect. After spraying this fire extinguisher, its powder will fall directly on the surface of the burning object, and then form a covering layer on it to isolate oxygen and achieve the purpose of extinguishing the fire.