The over 400-year old family-run company is based in the town of the same name in the Sauerland. Documents dating from 1577 already mention this very long-established company. But it's probably even quite a bit older. Over time, it has become a tradition for generations of Olsberg families to join the company that bears the town's name. People in the region, for instance, still affectionately call it the "Olsberger Hütte".

The company is managed from its base in Olsberg, which is also home to a foundry and a thin sheet-metal department. It is also from where wood and pellet burners and electric heaters are sold. The cast products that are also manufactured for capital goods here may be found in robots, electronic-drive solutions, water-supply equipment and construction machines. The thin sheet-metal products are manufactured for such famous brands as WMF and AEG as well as for electrical heating systems and wood burners sold under the company's own "Olsberg" brand.