... maintenance 3.Low noise 4.Quality service. 1.GYS-50 type evaporative air unitsParameter:Voltage: 380V Air volume: 50000m3/h Power ... *1900*1900mm Wind pressure: 650Pa Lowest Noise(dB): 78dB Fan type : Centrifugal Applicable area: 300-450 Water consumption: 30-50kg/h ... ,cooling, dustproof, except taste at a suit, increase air oxygen levels and improve work efficiency. 3 Big air volume, supply of ...