Please let us know if you have a question, want to leave a comment, or would like further information about Hidrotim Defence. client inquiries Factory : Ostim OSB. 1212. Street Number:5 Yenimahalle / Ankara R&D Center: Ostim Teknopark Ostim OSB, Cevat Dündar Street. Orange Building, Floor:4, Number: 1 / 63 Yenimahalle/Ankara. 06370 +90 (312) 385 16 61 info@hidrotimdefence.com feedback form submit