Machines, mechanical apparatus and mechanical implements and parts therefor, namely, electric plasma cutting machines and electric plasma welding machines, electric arc welding machines, electric photon beam machines for cutting metals; laser machines, namely, laser welding machines, laser engraving machines; electric plasma arc machines, electric plasma arc light machines for the cutting, welding, joining, aligning, coating, spraying, marking and inscribing of materials, for the thermal treatment and processing of materials, consisting of torches, electric arc torches, plasma torches, electric power supply units, ignition units, exhaustion units, cooling devices, distance regulators, manual and automatic gas supply and control units, connectors and conduits all sold as a unit; operational replacement parts and replacement parts and fittings, for all the aforesaid goods