The Nuo Leng roof mounted air conditioning unit is installed on the roof or floor and provides air conditioning indoors through air ducts. It is divided into air-cooled type (single cooling type) and air-cooled pump type (cold and warm type), with a cooling capacity of 13-624KW and suitable for ambient temperatures of -15~55 ℃. It is widely used in various large space buildings, such as large conference centers, sports halls, exhibition centers, large supermarkets, cinemas, electronic workshops, etc. Without the need for indoor terminals, rooftop units are particularly suitable for large spaces.