Portablesuper-speed ventilator -Made of Aluminum alloy Motor , Blade of Die-cast aluminum alloy and Galvanized steel body -With the good capability, the novel pattern, the reasonable structure and the strong suction. -Make low noise and Light weight due to die-casting aluminum alloy - Move easily wherever exhaust or inhalation by field condition due to small and portable - Prevent workers from the suffocating by improving bad Additional InformationHand-Carrying Style with Push Botton Switch