Nikolaos Mariou

Sidenor Holdings SA engages in the manufacture and sale of industrial materials. Its products include merchant bars, quarto plates, wire rod, boron flats, mining profile, steel balls for grinding, pipes and tube, wire, welding, hard aggregates and building materials, ploughshare blades, and railway connections. The company was founded in 1962 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.

Vioryl SA is a Greek company that specializes in the production of aromatic chemicals and food flavorings. The private company is based in Athens, Greece.

Part of Viohalco SA/NV, Dojran Steel is a private company that manufactures steel products. The company is based in Dojran, North Macedonia.

Part of Viohalco SA/NV, Sovel SA is a Greek company that produces steel products. The private company is based in Athens, Greece.

Erlikon SA is a Greek company that manufactures semiconductors.

Part of Viohalco SA/NV, Aeiforos SA is a Greek company that provides metal processing services. The private company is based in Ionia Thessaloniki, Greece.