... : YesBoot Auto-water: YesShell Material: PP Coextrusion PlasticWorking Principle:Air cooler cool the outside air temperature directly with evaporative cooling, supply the ... of the workshop will be cooled down by exchanging the air insideApplication:Hot and dry area, supmarket, workshop, factory, hospital, railway ... hall, meeting room, clothing factory etc.factory and packing factory use air-cooler