The fan blades of the ceiling fan are generally 3, the fan blades of the table fan are generally 5, and the cross section of the common fan blades is generally curved. The width and Angle of the fan blade are designed, depending on the load power of the motor. If you do not consider the motor power only look at the speed of a certain, but also look at the Angle of the fan blade, if the Angle of the fan blade is the same, of course, the wind is wide, and the design and production of the fan blade are presented as a regular symmetrical structure, so that a uniform and stable wind source can be generated. Common page fans are three-page fans, four-page fans, five-leaf fans, double-layer fans and so on.