DC ARGON ARC WELDER CARBON DIOXIDE GAS SHIELDED WELDING MACHINE GROUND CLAMP DISTRIBUTOR ELECTRIC WELDING PLIERS PEDAL TYPE AC SPOT WELDING MACHINE PLASMA CUTTING TORCH AIR PLASMA ARC CUTTING MACHINE MANUAL INVERTER ARC WELDER PNEUMATIC AC SPOT WELDING MACHINE AC AND DC (SQUARE WAVE) PULSE ARGON ARC WELDER CONTRAVARIANT WELDING AND CUTTING POWER SUPPLY ENERGY-STORAGE STUD WELDER SEMIAUTOMATIC THYRISTOR CONTROLLED CO2|MAG WELDER CONTRAVARIANT SUBSIDIARY CURRENT ARGON ARC WELDER ARC WELDING MASK PROTECTIVE COVER GAS SHIELDED WELDING WIRE STAINLESS STEEL WELDING ROD ARGON GAS FLOWMETER CARBON DIOXIDE GAS FLOWMETER ARGON ARC WELDING TORCH PLASMA(ARC)CUTTING