The fire control used in the industry, civil building and people¡¡¥s air defense project mainly arranges cigarettes, can be used and ventilated and taken a breath in the room at ordinary times. The electrical machinery adopts the high temperature type, and cool the wind circulatory system, can run for a long time under 100 degrees centigrade of medium gas , can send exhaust gas of 280 degrees centigrade and up to 40 more than of kind steadily . Three kinds of types, such as horizontal, roof type, cupboard type, etc. Are suitable for selecting for use. Arrange cigarette ventilate two time spent, can select pairs of speed electrical machinery for use , ventilate and take a breath at a low speed, arrange cigarettes at a high speed.