The series is composed of cylindrical aluminum alloy frame, PBT plastic wind blade and motor, and is installed by double-sided flange, so it has the characteristics of small volume, no maintenance, easy installation, and has low noise, small vibration, reliable operation and other excellent performance. The fan is mainly used for ground automatic control device, electronic equipment, medical equipment, computer, power equipment, welding machine, packaging and printing equipment, satellite communication, CNC machinery, office supplies automation and other ventilation and heat dissipation.