NB Čelik was founded in 1986. as an independent craft store construction locksmith "NB Steel" in its early days the primary activity of the company was performing locksmith works on smaller buildings, making doors and windows and installation stepenišnih fence. Valuable and hard work during the unstable years of the nineties, the company not only maintained, but also achieve continuous improvement by adopting new technological processes and the constant improvement of professional staff, and became a limited liability company.