This is an aluminum lighting box, which is made via the process of cut, CNC punching, NC bending, welding, deburring and powder coating. Such kind of aluminum cases/enclosures is used in lighting industry widely. - Update: 2007-11-20

This is a machine cover, which is made out of galvanized steel sheet for a Japanese company. The galvanized sheet products need scratch-free during sheet metal fabrication process and it is also important to have a well welding. - Update: 2007-11-20