... welding, pulsed-argon arc welding, argon arc spot welding, GMAW(CO2/MIG/MAG), pulsed-GMAW, double-pulsed GMAW, arc carbon gas cutting ... welder and contain welding method consisted of any functions in above 8, ... internet. The user can add other welding functions to welding machine, and improve the welding performance by software upgrade. 8. Long ...