1.The main frame of the machine is welded from square profile steel, with strong structure, high strength and no deformation; 2.While C type machine adopt frequency control of motor speed and voltage adjustment device, realized multi-wire cutting and speed control. . 3.The machine adopts converter speed governing advantageous in stable moving, large range(0-4m/min)of step-less speed governing, suitable for requirements of low-speed cutting and fast cutter-retract; 4.Voltage adjustment: Adopts 10KVA multi-tapped special transformer for adjustment with wide adjustable range and multiple voltages