Orsk Construction Ironwork Plant
Oskol Construction Company LLC
OOO PSK "BELENERGOSTROY"
LLC "Oskol Steel Plant"
LLC "CORONAR"
Soyuzprommontazh, LLC"
OOO "CONSTRUCTORARGUMENT"
LLC " Shadrinsky plant of metal structures"
LLC "Plant of metal structures" TEMPO"
JSC "Kulebaki factory of metal constructions"