The fan is a driven fluid machine, which relies on the input mechanical energy to increase the gas pressure and discharge the gas. Wind turbine is the abbreviation of China's habit of gas compression and gas transmission machinery. Generally, the wind turbine includes ventilator, blower and wind turbine.

Fans are widely used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, as well as ventilation and air induction of boilers and industrial furnaces; Cooling and ventilation in air conditioning equipment and household electrical equipment; Drying and selection of grain, wind source of wind tunnel and inflation and propulsion of hovercraft, etc. Distribution cabinet manufacturer