The main use of environmental protection fan is for general factories and large buildings indoor ventilation or transmission of air and other non-spontaneous combustion, non-explosive, non-volatile, harmless to human health, non-corrosive to steel gas.

High-pressure centrifugal fan 9-19 high-pressure centrifugal fan fan, can be made into right-and left-turn two types.

It is mainly used for ventilating and conveying air and other gases which are non-spontaneous combustion, non-explosive, non-volatile, non-harmful to human body and non-corrosive to steel in general factories and large buildings.