Ec Fan, DC Brushless Fan, External Rotor Motor Fan manufacturer / supplier in China, offering Pbm DC 24V/48V Backward Centrifugal Fan of Working Principle, 220mm 3060rpm 648PA Ec-AC Backward Curved Centrifugal Fan for Electronics Industry, Energy Efficient Aluminium Alloy 280mm 48V 2200rpm 650PA DC Backward Curved Centrifugal Fan and so on.