Our rooftop AC unit has a complete series with features of high EER, low noise, high static pressure, accurate control and slight vibration, high anti-cor-rosion, good sealing property and simple installation, etc. Fresh air unit can improve air quality much better. Rooftop AC unit is applicable to the large factories which is inconvenient for installing water system or lack water source . It can control the temp ,humidity and cleanliness of buildings.