Aolan Evaporative air cooling system, provide you the most comfortable cool fresh air at the lost cost. Green: no CFC.cool air through water evaporation, environmetal friendly. good for human healthe Economical:each cooler can cover 150 m2 cost 1.1kw Multi-functional:can be used as humidifier, air purifier, air filter, ventilator, fan, air conditioner 1.factories and workshops for various industries, such as injection moulding, diecasting, rubber, spray coating, silkscreen, toys, electronics, household appliances, shoes, printing, cladding, hardware, food processing, textiles, garments and dying, as well as laundries and production plants with high temperatures. 2.medium and large shopping malls, markets, restaurants, waiting rooms and indoor entertainment places. 3.places with polluted, smelly or dusty air 4.places that also have conventional air conditioners installed, but which lack sufficient supplies of fresh air or oxygen.