Punching: A stamping process (including punching, blanking, trimming, cutting, etc.) that separates the sheets.
Bending: A stamping process in which a sheet is bent into a certain angle and shape along a curved line.
Deep drawing: a stamping process in which a flat sheet material is turned into various open hollow parts, or the shape and size of the hollow part are further changed.
Partial forming: A stamping process (including flanging, bulging, leveling, and shaping processes, etc.) that changes the shape of a blank or stamping with local deformation of various properties.