- Institute of Earthquake Engineering and Engineering Seismology IZIIS, Skopje, Macedonia, System DC 90 expert consultant.
- Bekament, Belgrade, System DC90 official designer
- Noveko, Vranje, System DC90 official representative in South Serbia and Macedonia
- Studio Petraskovic, Obrenovac
- Slavko Jovanovic, System DC90 official representative in Eastern Serbia
- MZT-EKA, Skopje, process software and gauges
- AFS, Belgrade, electro and hydrolic systems
- SISTEM DC 90, Belgrade, group leader
- Expert team, regular or temporary experienced personnel engaged in group activities.