1. Stamping parts are made on the premise of low material consumption, with light weight but good rigidity. After deformation, the internal structure of the book is improved, and the strength of the stamping parts is relatively high. 2. The dimensional accuracy of stamping parts is relatively accurate. Under the same mold, the dimensions are consistent and can be used interchangeably. Stamping parts can meet the assembly requirements of general accessories without further processing, and the size does not need secondary processing. 3. The surface quality of stamping parts is good, and the appearance is smooth and beautiful. The good surface quality of stamping parts also provides powerful conditions for painting, electroplating or other surface treatment.