Manufacture of structural metal products, manufacture of tanks, reservoirs and containers of metal, manufacture of steam generators, except central heating hot water boilers, manufacture of weapons and ammunition, manufacture of computers and peripheral equipment, manufacture of communication equipment, manufacture of instruments and appliances for measuring, testing and navigation; watches and clocks, manufacture of irradiation, electromedical and electrotherapeutic equipment, manufacture of machinery and equipment n.e.c., manufacture of motor vehicles, trailers and semi-trailers, building of ships and boats, manufacture of railway locomotives and rolling stock, manufacture of air and spacecraft and related machinery, manufacture of military fighting vehicles, manufacture of medical and dental instruments and supplies and repair and installation of machinery and equipment