... in ChinaObtain patent, patent number:ZL 2008 2 0076183.5(Double-pulsed GMAW)ZL 2008 1 0054660.2(Multiple functions digital ... clamp, aluminum alloy window frame, automobile parts, aluminum alloy control cabinet, Car roof, clutch, autolift, fuel tank, bogie, aluminum patio ... argon arc spot welding, GMAW(CO2/MIG/MAG), pulsed-GMAW, double-pulsed GMAW, arc carbon gas cutting welder and contain welding ...