The metallurgical complex Rudnitsa and Zhelezarnitsa was built in the industrial area in Skopje. This metallurgical complex started up in 1967 as an integrated steel mill, which included:
- Topilnica – production of pig iron on 5 electric arc furnaces;
- Zhelezarnitsa – production of steel on steel converters;
- Topla and Ladna Valovnica – hot-strip and cold-rolling mills.
As a result of the economic conditions in Macedonia after separation from Yugoslavian Federation in 1991, the Metallurgical complex Rudnitsa and Zhelezarnitsa was restructured in 10 brand-new independent legal entities, all of them under former metal mill. One of the respective companies, namely Topilnica, was reconstructed for the ferroalloy production.
- 2005 - Skopski Leguri DOOEL was founded and had the headquarters and manufacturing plant located at 16, Makedonska Brigada Street, Skopje, Macedonia;
- 2006 - Skopski Leguri DOOEL was reconstructed for manganese ferroalloys manufacture (silicomanganese).
- 2008 - manufacture line for ferronickel was designed and prepared for start-up.
- 2010 - the manufacturing company made own investment expenditures for Electric Arc Furnace №1 for ferronickel production.