The dry powder fire extinguisher can put out general fires, as well as fires caused by oil and gas combustion. The dry powder fire extinguisher uses carbon dioxide gas or nitrogen gas as the power to spray out the dry powder in the cylinder. Dry powder is a kind of dry, easily flowing fine solid powder, which is composed of fire-extinguishing base material, moisture-proof agent, flow accelerator, caking prevention agent and other additives. It is mainly used to put out the initial fire of flammable liquid, flammable gas and electrical equipment such as oil and organic solvent.

Dry powder fire extinguisher is a kind of fire extinguisher, which can be divided into: ① ordinary dry powder fire extinguisher; ② Ultra-fine dry powder fire extinguisher. The dry powder fire extinguisher is equipped with ammonium phosphate and other dry powder fire extinguishing agents. This dry powder fire extinguishing agent is easy to flow and dry. It is composed of inorganic salt and crushed dry additives, which can effectively put out the initial fire.