NB Thyristor Controller CO2/MAG Automatic Welder adopts integrate circuit, technology of power mould high capacity of thyristor and fine ad justable easy capacity.It can adjust current and voltage separately. Changed one knob that can welder to choose CO2/MAG, and cooperate with other kinds of air automatic welding machine.It is suit for welding many kinds of metal, such as low carbon steel, low alloy steel, high strength steel, stainless steel and aluminum.It is suit for car building, metal structure, chemical machinery, boiler pressure vessel, pipe and so on fields.