Ordinary "Tiny Cooling Fan" axial fan can be used for general factory, warehouse, office, residential and other places within the ventilation, can also be used chillers (air cooler), evaporator, condenser forced ventilation. Corrosion, explosion-proof "Tiny Cooling Fan" axial flow fan with corrosion-proof materials and measures, and matching explosion-proof motor, can be used explosive, volatile, with corrosive gases for general use ventilation equipment. Axial fans require gas delivered "Tiny Cooling Fan" should be no significant dust, non-sticky and fibrous material; motor directly coupled to a temperature not exceeding 40 ℃, the belt drive type temperature does not exceed 60 ℃.