The main activity of Steklarna Hrastnik L.l.c. is the production of different lines of glass products.
The Vitrum business unit produces the tableware products line and the Special business unit produces the container glass products line.
The subsidiary Steklarna Hrastnik – Opal LLC has been operating as an independent firm since 2000. Its main focus is the production and processing of lighting glass and the production of different hand-blown glass products.