7 Plasma arc torch systems for cutting and marking metallic workpieces, primarily comprised of cutting torches, and also including 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 workpieces, namely, welding machines and replacement and structural parts therefor; Replacement parts for laser machines and power 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 and laser nozzle holders; laser machine tools, namely, laser 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; and lenses for laser cutting machines being structural parts