Today's "Micro Cooling Fan" has been a change in people's minds the traditional image, both in appearance and function to pursue more personalized, and computer-controlled, natural wind, sleep wind, the anion, etc. These functions that belong to the air conditioner, but also It is used by many manufacturers of electric fans, and added lighting, insect repellent and more practical function. The appearance of the eclectic and versatile product, indicating the overall development trend of "Micro Cooling Fan" of the industry. The current shortage of international energy, domestic shortage also occurred frequently in recent years, energy-saving features will be an unavoidable development. Potential evaporation principle Working positioned between the air conditioner and fan air-conditioning fan with water as the medium, the use of phase change material absorbs heat and water law, it can send cold air below room temperature, and the built-in conventional electric source can be sent warm and humid wind. In addition, with the battery "Micro Cooling Fan" or the use of solar energy as an energy saving and environmental protection fan will be promoted and applied greater efforts in the future.