... with the help of punch press, forging machine or other equipments, for instances, hot extrusion ... .3. Various electric tools, such as gear and axes.4. Quench for machine tools, such as lathe ... mold, mold accessory and inner hole of mold.C. Welding (braze welding, silver soldering and brazing ... different materials.1. Welding of various hardware cutting tools, such as diamond tool, abrasive tool, drilling ...