OMI (ORDTECH Military Industries) is a Greek defence company established in the mid-1980s, with headquarters and production facilities in the Menalon Industrial Area, in Arcadia (it should not be confused with Ordnance Technology Service Inc., a U.S. company which unofficially also uses the Ordtech acronym). OMI produces, designs, upgrades and supports a wide range of weapon systems, munitions, aircraft armament, missile systems and technologies. Its products and services include Guided Munitions, Composite Propellants, Aerial Bombs, Launchers and Unguided Rockets, Countermeasures, Ordnance and Weapon Systems for aerial, land and naval forces, etc.