Through the fan in the evaporative cooler pad with the use of natural humidification cooling the physical process, constantly pumping fresh air to clean the working environment, improve the environmental comfort. Cooling effect is obvious, generally can be reduced to 10-15 ℃. Low cost: the cooling system because the structure is simple, the use of materials is relatively low price so low cost, air conditioning equipment investment is 1 / 30. Mute comfort: air volume, no vibration , Low noise, large cooling capacity. Energy saving and environmental protection; no freon refrigeration enzyme, pollution-free environmentally friendly products, the equivalent of compressor air conditioning operating costs are much lower. Power consumption only need to compressor air conditioning 1 / 20. It is unique ventilation and ventilation effect so that the traditional air conditioning can not match.