... noise, hall-free, power,etc.Applications: External rotor motor, centrifugal fan, centrifugal blower, axial fan in HVAC,Tele-communication, refrigeration, clean room, IT industry ... axial fan, DC and EC circular duct fan, EC Gas blower, External rotor brushless dc motor, EC motor, energy saving motor,etc. Low noise 48V BLDC Fan motor ...