Metal stamping parts refer to the use of external pressure to make the metal produce separation or plastic deformation, so as to obtain the required workpiece, which is called metal stamping parts. Generally speaking, metal stamping parts appear more: cracks, scratches, scratches, oxidation, deformation, burrs, mold marks, stains, bumps and dents and other defects, therefore, appearance testing equipment has been trusted by many manufacturers. What are the advantages of the appearance inspection of metal stamping parts?