... Fan with humidifier 2.Purify air, freshen air,decrease dust 3.Long range of spraying 4.Low noise 5. ... decreases the temperature, improves the relative humidity and reduces the dust. 2. Work EnvironmentVoltage --- if the main voltage is ... stadiums, arenas, airports, bus stations, large gatherings, hotels cooling.dust extraction: farm, mine factory, etc. humidification: textile mills, cotton warehouses, ...