Georgios Mentzelopoulos

Viohalco SA is a holding company that engages in the production, processing, and trading of steel, copper, and aluminium. The firm also engages in real estate development. It operates through the following activities: Steel Sector, Copper Sector, Aluminium Sector, and Real Estate Development Sector. The Steel Sector involves the production of long and flat steel products, pipes, and hollow structural sections, as well as downstream products. The Copper Sector produces copper and brass tubes, copper titanium-zinc rolled products, copper and brass extruded products, cables, conductors, enameled wires, and rubber and plastic compounds. The Aluminium Sector engages in the production of aluminium coils, strips, sheets and foil, lithography sheets, as well as architectural and industrial aluminium profiles. The Real Estate Development Sector develops commercial and industrial properties. The company was founded in 1937 and is headquartered in Athens, Greece.

Corinth Pipeworks Holdings SA engages in the manufacture and sale of steel pipes. It also offers final site delivery, storage, material and corrosion testing, pipe coating, pipe cutting, and technical consultancy and materials selection services. The company was founded in 1969 and is headquartered in Maroussi, Greece.

ETEM SA is an aluminum extrusion company, which engages in designing and producing architectural systems and aluminum profiles for industrial applications. Its products include doors and windows, security systems, rolling shutters, and office partition walls. The company was founded by Markos Kallergis in 1971 and is headquartered in Magoula, Greece.

Stomana Industry SA manufactures and distributes steel products. The firm offers reinforcing steel, heavy plate, merchant bars, special steels, and special profiles and sections. The company was founded in 1953 and is headquartered in Pernik, Bulgaria.