Oyak has 14 subsidiaries including Aslan Cimento, Bolu Cimento and Erdemir.
They are in:
View the org chart displaying its 13 main executives
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Oyak has 1,030 competitors including ArcelorMittal (Luxembourg), Ternium (Spain) and ThyssenKrupp (Germany).
Contact by email its executives including Gürtan Damar
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