What are the advantages and disadvantages of electric fans?

What are the advantages and disadvantages of fan lights, and the advantages of fan lights. Most of the energy-saving electric fans are motors made of high-quality steel, which have better electromagnetic effects, and are more energy-efficient than capacitor speed regulation at low speeds. Various energy-saving and emission-reduction technologies make this electric fan have excellent energy-saving effects. It can be used in winter and summer, and the fan lights have positive and negative switches. In summer, in the forward direction, the fan blades rotate, and the wind feels soft and cool. In an air-conditioned room, it can assist air-conditioning, increase the flow of cold air, reduce electricity usage, and be environmentally friendly and prevent air-conditioning syndrome.