Correct placement is also very important, "Micro Cooling Fan" from the human body should not be too close, too close to the hair so that the blood circulation and sweat circulation gap is too large, the nerve center will lose its balance, once the time is too long, the various organs of the body will feel tired so general discomfort. Optimal placement of fans around the human body as the distance of 2 meters, so that even more gentle wind.