... machine, which has eight welding methods, such as MMA, TIG, Pulsed-TIG and etc... Multiple functions digital inverting welding machineThe leading ... patent, patent number:ZL 2008 2 0076183.5(Double-pulsed GMAW)ZL 2008 1 0054660.2(Multiple functions digital Inverting ... welding, argon arc spot welding, GMAW(CO2/MIG/MAG), pulsed-GMAW, double-pulsed GMAW, arc carbon gas cutting welder and contain welding ...