Abstract: A snow thrower includes a motor, an auger driven by the motor to rotate, a handle device for a user to operate, an auger housing for containing the auger and a frame for connecting the handle device and the auger housing. The auger housing is made of at least two different materials.

Abstract: A snow thrower includes a motor, an auger driven by the motor to rotate, a handle device for a user to operate, an auger housing for containing the auger and a frame for connecting the handle device and the auger housing. The auger housing is made of at least two different materials.

Abstract: A grass trimming head includes a housing assembly and a spool. The housing assembly is formed with a housing cavity and an outer aperture for allowing a cutting line to be inserted from an outside of the housing assembly into the housing cavity. At least a portion of the spool is arranged inside the housing cavity, and the spool is rotatable with respect to the housing assembly about a central axis. The spool is formed with an inner aperture for allowing the cutting line to be inserted into the spool or a clamping portion configured to fix the cutting line.

Abstract: The present invention relates to a display device and a preparation method of a display device. The display device comprises a display panel provided with a plurality of sub-pixels, and a light-splitting unit provided on a light-emitting side of the display panel, the light-splitting unit comprises a substrate having a plurality of grooves provided thereon, a side surface of each groove is a flat surface; and the plurality of grooves and the plurality of sub-pixels are the same in number and respectively correspond to each other in positions . The display device can realize multi-viewpoint glasses-free 3D display; and meanwhile, the display device further has a simple structure and can be easily made small, light and thin.