Ec Fan, DC Brushless Fan, External Rotor Motor Fan manufacturer / supplier in China, offering 146mm High Speed Waterproof IP55 Radial Fan Ec-AC Double Inlet Blower, Ec 138mm Motor Forward Curved Centrifugal Ventilation Fan Large Volume Air Blowers, 310*197.8mm Ec-AC Backward Curved Brushless Centrifugal Exhaust Fan for Industrial and so on.