High Qualtiy China FAQ Manufacturer All kinds of Electric Fans 1.Materials:100% Copper Motor,Optimum fan blade structure. 2.Advantage:High Volume,Low Noise,Long Life,Three Grade adjustable speed 3.Blades:2 or 3 blades are available. 4.Usage:Widely used for summer cooling &Ventilation in workshop of industrial and mining enterprises,warehouse. Model NO. (NO.) Voltage (V) Power (KW) Revolution (rpm) Air Volume (m3/h) Noise dB(A)750mm220/38026014501800073650mm220/38023014501380070500mm220/3801601450780062