High-frequency electric welding machines for plastics and laminates comprising at least one layer of plastic; cutting machines for laminated film; machines and structural parts of machines for manufacturing pipes, boxes of metal, containers for packaging, aerosol dispensers and closing lids; injection molding machines for plastics; pressure molding machines for plastics; dimpling machines for plastics; dimpling machines for metals; industrial handling robots; conveyors for conveying tubes, bo...