General metal stamping parts, in the production process, there are the following four processing techniques:

1. Blanking: separate sheet metal stamping process (including punching, blanking, trimming, cutting, etc.).

2. Bending: the stamping process of bending the sheet into a certain Angle and shape along the bending line. 3. Deep drawing: the flat sheet into a variety of open hollow parts, or the shape and size of the hollow parts to further change the stamping process. 4. Local forming: with a variety of local deformation of different properties to change the blank or stamping parts of the shape of the stamping process (including flanging, bulging, leveling and shaping procedures, etc.).