Dry powder fire extinguisher, named after the cylinder is filled with dry powder fire extinguishing agent. Mainly suitable for gas fire extinguishing, not suitable for precision instrument fire extinguishing.
Foam extinguisher is a kind of fire extinguisher with foam spray, which is mainly used to put out oil fires. Such as gasoline, kerosene and vegetable oil. It can also be used to put out general solid fire. Such as wood, cotton, hemp, bamboo and other fires, as well as fires caused by aircraft and automobile accidents, are not suitable for extinguishing live equipment fires and gas fires.