... .CCC certification 3.One year warranty CO2 mig welding machine NBC-315(C/R)1.Multiple ... CO2/MIG/MAG welding,simple struture,high reliability,CO2,CO2+Ar,Ar gas shielded weldig machine.Can be long welding,spot-welding,flat-welding,vertical welding ... ,overhead weldig received a full full range of welding ...