... control 5:safety voltage controlled Zhengzhou Gou's New Quenching machine tool For Valve, Cylinder Main configuration:1, CNC ... valve control water;8, With a heating device control plug.Gou's New Quenching machine tool has many advantages, such ... reduce the transport, saving manpower, increase production efficiency. 6) multi-usage. Complete quenching, annealing, tempering, normalizing, quenching and ...