One is to open the material according to the production needs, after the opening of some such as small accessories production can go to the punch and then gong cutting or CNC processing. This is a lot in the production of eyeglasses parts and auto parts. The container is to burn and weld after the opening punch, and then spray oil after sanding, and then assemble the accessories can be shipped. And for small accessories, there is a lot of polished surface treatment, plating or oil injection. Then welding or screw assembly packaging shipped.