"220V Cooling Fan" The main reason is that he used the natural wind or wind sleep function electric fan. Our fans have designed remote control series ordinary wind, natural wind, sleep wind, three functions, air volume ordinary wind is constant, there will be no large do not small; natural wind mainly for large wind nature do not small simulate can periodically from strong to weak control circuit, and then control the motor speed will not fast do not slow; the same natural principle sleeping wind, like the wind, is also used by the strong to weak control circuit to control the motor speed. "220V Cooling Fan" consumers use please reasonable selection they need wind classes. The main reason is that he used the fan with the segmented header. There are two header fans of our company, one is the first automated large. Use automatic big fan header is fixed swing angle (swing angle about the same), it can not be adjusted; the other is the first segmented. Use segmented fan header swing angle can be adjusted, and there is no fixed point of view. "220V Cooling Fan" according to their need to move the head (the direction they need to move) to adjust the angle of the fan swing.