welding machine 1) CE,ISO9000,ROHS,UL approved 2) MCU + DSP digital control, IGBT welding machine 3) pulse welding machine Main Characteristic:MCU + DSP digital control, control waveform exactly, one pulse drop of the transition implementation. Minimal welding spatter, good metal soldering rate, good weld forming, small welding deformation. These series machines have clear up the wire ball when ...