References:

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-Erdemir T.A.Ş.

-Isdemir T.A.S.

-Ersem (Erdemir Eregli Steel Service Center)

-Erdemir Engineering Inc.

-Eldorado Gold Co.

-T.C. Iller Bank

-OYKA Paper Packaging Factory

-Turkish Coal Institution

-Kardemir T.A.Ş.

-Bereket Energy

-Turkey Sugar Factories Inc.

- ThyssenKrupp AG

-ODAŞ Energy

-JPMC (Jordanian Phospate Mines Co.)

-Gazi Metal