40 Treatment of materials; Treatment of materials, especially printing, in particular by laser or by water jet, of materials of metal, plastic, wood, stone, fabrics, paper and cardboard; treatment of materials, especially coating, etching and heat treatment processes, processing of plastic, metal and composite materials; assembly of printed materials; custom manufacture of plastic or metal goods; custom manufacture of printed matter for third parties; processing [forming] of goods of metal or plastic; galvanization, milling, laminating, molding, polishing (abrasion), planing, sawing, welding, laser or water-jet printing; information relating to the treatment of materials; digital printing; printing, 3D printing and scanning services; providing information relating to printing, 3D printing and scanning; manufacturing services of parts by means of 3D printers; manufacture of parts (objects) by adding matter through the implementation of different additive manufacturing technologies (3D printing); 3D printing services and other custom manufacturing services for others; custom manufacturing services in the field of rapid prototyping; direct digital manufacturing for prototyping and production; custom manufacturing of metal and plastic parts on-demand and according to third party specificities by using direct digital computer-aided manufacturing for prototyping and production