Longwell Centrifugal Fans | Brushless External Rotor Powerhouse for Extreme Environments Forged through decades of industrial fan expertise, Longwell's new-generation centrifugal fans integrate brushless external rotor motors and high-strength composite impellers, delivering 3x lifespan with superior corrosion/deformation resistance. Rated IP54 and Class F insulation, they thrive in -25℃ to 60℃ extremes while defying dust and salt spray challenges. The built-in quadruple protection system (current limit/overheat/overload/lock) slashes failure rates by 90%, ensuring 24/7 secure operation. #Industrial fans #Silent technology #Centrifugal Fans #LONGWELL