Orhan Onur Company Group, which is also partner of BETRA, have been operating in different areas of railway sector since more than 50 years and beside its dominiance in local market it keeps distrubutional rights (agency) of worlds leading railway producers

​Main conpanies represented by Orhan Onur ;​

Vossloh Werke GmbH (Germany)
Plasser & Theurer (Austria)
Robel Gmbh & cO (Germany)
Voest-Alpine Schienen GesmbH (Austria)
Kraiburg Elastik GmbH (Germany)
SRS (Sweden)
Speno (Switzerland)
Elektro Thermit GmbH (Germany)