... various wood working tools, such as various woodworking planer, milling, and welding a variety of woodworking drill. 2. Forging, rolling class2 ... , drive axle, a variety of small axes, a variety of fork and other high-frequency quenching.3.3 power tools on the ... integrated circuit digital automatic control, with manual, automatic, semi-automatic, and the lack of heat insulation of cold sub-time control ...