• The power source can be used for sub-arc, MMA and gauging. • The reliability is highly improved with the new tri – proof design. Capable to operate in different surrounding. • Using one of the most advanced control electro circuit at present. All the important indexes are among the top level in the world. • Perfect welding performance, deep welding crater, strong intensity and good molding. • Widely applied in the automatic Welding of metal parts, medium and big pressure containers of carbon steel, alloy steel and stainless steel. • With protection electro circuit against over current, over heat, over voltage and short voltage. Safety in operation is assured.