... Digital control 5:safety voltage controlled Zhengzhou Gou's New Quenching machine tool For Valve, Cylinder Main configuration:1, CNC system ... water;8, With a heating device control plug.Gou's New Quenching machine tool has many advantages, such as: 1) ... protection and energy saving, safe, reliable, good working conditions for workers. Zhengzhou Gou's New Quenching machine tool For Valve, Cylinder