"Sheet metal" in sheet metal processing refers to thin metal plates, which can be processed by stretching, stamping, bending, etc., and the thickness is usually less than 6mm. Common materials include iron plates (black steel SPHC, cold-rolled steel SPCC, galvanized steel SECC), hot-dip galvanized steel sheet SGCC), stainless steel (SUS304, SUS316), aluminum (AL5052), copper, etc. Sheet metal processing is different from other processing technologies. It includes many different steps, such as: laser cutting, NCT punching, cutting, folding, welding, riveting, etc. The specific products produced are usually support frames, equipment covers, internal parts and some functional objects, such as electronic control panels, medical equipment covers, airport automatic clearance machine covers or parts, snapshot cabinets, food processing equipment covers and parts.