Metal shell, precision stamping, high temperature paint treatment, no rust, beautiful appearance Pure copper motor, pure copper motor, H-class insulation, high temperature resistance, quiet, long service life, can be connected to work Bearing, using high temperature resistant ball bearings, making the fan more , stable operation, low noise Multi-wing impeller, impeller multi-wing structure, integrated stamping, after static and dynamic balance debugging, to ensure smooth operation, low noise, large air volume High-precision rotor, CNC lathe high-precision processing high precision, stable operation magnetic field current