Plasma arc torch systems for cutting and marking metallic workpieces, primarily comprised of cutting torches, electrical power supplies, electrical leads, and replacement parts therefor; machine tools, namely, machine tools for the cutting and forming of materials for metal treatment, laser cutting for metal treatment, laser cutting machines, laser welding machines; accessories and auxiliary equipment for beam machining of workpieces, namely, cutting machines and spare parts therefor; replacement parts for laser machines and laser tools; lasers not for medical use, namely, marking lasers for material machining; structural and replacement parts being parts of machines for cutting sheet metal goods, wood, and plastics, namely, laser nozzles, laser nozzle holders, and laser heads; laser machine tools, namely, machine tools for the cutting and forming of materials; high-temperature laser cutting machines, structural nozzles and replacement parts therefor; plasma arc cutting machines and lasers not for medical use being parts of aforesaid machines; high-temperature cutting machines and lasers being parts of aforesaid machines; lenses for laser cutting machines being structural parts