Waterproof cooling fan using method

Why "Waterproof Cooling Fan" the wind will do large not small (remote control series)?
Consumers have reflected some of our fans (remote control series) will do a large amount of wind not small, mainly because 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. Reminder: consumers use please reasonable selection they need wind classes. "Waterproof Cooling Fan" Why swing angle only one side of some fans? Consumers have to reflect upon some of our fan swing, swing angle only one side, instead of about the same. 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. Reminder: Consumers can move according to their needs head (the direction they need to move) to adjust the angle of the fan swing. "Waterproof Cooling Fan" fans before and after the demolition of the fan network how? Some consumers reflect our fans before and after the network is difficult to dismantle.