Coppermotor:High-power and high-speed operation, less heating, low energy consumption, long service life Total-enclosed motor:Better quality electrolyte steel casing. waterproof and wear-resistant without deformation Heat dissipation back cover:The rear cover of the motor heat dissipation is more firm with a new design, and the Heat dispersion is better Protective net:Prevent foreign matter inhalation and protect the safety of personnel and fans Air outlet:Round air outlet, strong wind, stable wind pressure and no wind leakage