FRP ventilator can be used for the general factory and large buildings of indoor ventilation, can be used to enter the gas, can also be used to output gas. The transported gas should be no more than 80 degrees of air and other non spontaneous combustion, harmless to the human body, no corrosive gas to the steel materials. The gas is not allowed to contain sticky substances, and the gas contained in the dust and hard particles is not more than 150mg/m3.