FZY-I series fans with external rotor motor consist of single phase asynchronous motors or three-phase asynchronous motors, axial flow fans, network and fax. The fan has good performance of big amount of wind, small vibration, low noise and stable operation. It can be mostly suitable for aeration and cooling of automatically control equipment which demanding big amount of wind, great electrical equipment, medical treatment equipment, computer, office supplies automation and electric welding machine. It also suitable for the building and workshop to aeration, exchanging and depurate the air.