... through forging press with the help of punch press, forging machine or other equipments, for instances, hot extrusion of watch case ... expansion or hot smelting, for instances, embedded welding of copper core of computer radiator with aluminum sheet and speaker web, compound ... hardware molds, such as small-size mold, mold accessory and inner hole of mold.C. Welding (braze welding, silver soldering and ...