7 Machines, namely, welding machines, welding torches, wire material feeding units for welding systems, electric welding systems, electric arc welding systems and cleaning systems for the cleaning of the welding torch front-end, namely, the gas nozzle and contact tip and the retaining head of a welding torch, parts, fittings and components of welding machines and electric welding systems, namely, torch cables, torch necks, consumables of welding torches, namely, liners, insulators, retaining heads, contact tips and gas nozzles; welding systems and systems consisting thereof, automated welding systems and systems consisting thereof for electric arc welding and soldering; components of welding systems, including welding torch apparatus of automatic welding machines for power supply and/or feeding other media to the welding location, electric welding apparatus and electric arc welding apparatus and parts and fittings thereof, including circuit boards for welding power sources