Ec Fan, DC Brushless Fan, External Rotor Motor Fan manufacturer / supplier in China, offering 190*68.5mm 710m³ /H 85W High Quality DC 48V Backard Curved Centrifugal Fan, 190mm DC 48V Waterproof Backward Curved Centrifugal Fan with PWM Speed Control, 24V 190*88mm 4050rpm 820m³ /H DC Backward Curved Centrifugal Fan for Electrical Appliances and so on.