... 5:safety voltage controlled Zhengzhou Gou's New Quenching machine tool For Valve, Cylinder Main configuration:1, CNC system control;2, ... heat treatment process, but also complete welding, melting, hot assembly, disassembly and heat through hot forming and so on. ... and energy saving, safe, reliable, good working conditions for workers. Zhengzhou Gou's New Quenching machine tool For Valve, Cylinder