1. The outer rotor axial flow fan series products have the characteristics of compact structure, reliable operation, low noise, convenient installation, energy saving and high efficiency. 2, the outer rotor axial fan is widely used in evaporators, condensers, chillers, heat pumps and ventilation areas and refrigeration equipment. 3.100% variable speed outer rotor motor has small starting current, motor protection class up to IP54, and insulation class B and F.