Manufacturing of metal signs for transportation and public management; Sales of signs for transportation and public management; Manufacturing of lighting fixtures; Sales of lighting fixtures; Manufacturing of electrical signal equipment devices; Sales of electrical signal equipment and devices; Battery sales; Manufacturing of photovoltaic equipment and components; Sales of photovoltaic equipment and components; Manufacturing of specialized equipment for traffic safety and control; Transportation facility maintenance; Graphic design; Sales of lighting fixtures; Import and export of goods; Technology import and export; Import and export agency; Manufacturing of metal chains and other metal products