Water of the corrugated paper fiber surface can be continuous drainage of the water to the surface of the water film formation, such as outdoor hot air by suction fan through the paper, as a result of the action of water, the water on the water film will absorb the air quantity of heat to evaporate into steam, so after processing, the cool moist air into the indoor, Right now the indoor can achieve immediately drop the effect of 5-10 degrees above. Size can be customized according to customer requirements.