ELKOK LTD - KOSJERIĆ is the company for production of electrical conductors based in Kosjerić. The company was entered in the court register at the Commercial Court in Užice on January 17, 1991. (registration number of the registration court insert 1-1140-00, mark and number of the court register Fi 67/91).

In July 1960, company strted as locksmith and sheet metal plant. In this way, the craft-production and service company "Metalac" was created, which at the time of its establishment had only 16 employees. The company operated under this name until January 1, 1962, and since then under the name Elektro kombinat "ELKOK"- Kosjerić.

On January 1, 1971, "ELKOK" was joined to the much bigger company, copper and aluminum rolling mill "Slobodan Penezić - Krcun" in Užice. In July 1977 again changes name to the conductor factory "ELKOK" Kosjerić, now as part of aluminum rolling mill "Slobodan" Penezić-Krcun" in Sevojno. From January 1991, "ELKOK" was separated as an independent company called "ELKOK" - Kosjerić.

After the privatization that took place on July 4, 2003. through the auction sale of 70% of the company's capital, the company was registered as a joint stock company whose majority owner is Babić Bratoljub from Belgrade.

On April 30, 2026. the company Elkok changed its legal form to a limited liability company (LTD).