Head Office:
   

Ali Nihat Tarlan Cad. Balkan Sok. Yerlikaya Apt. No:2/1B

Bostanci / ISTANBUL
   
Phone : +90 216 445 86 15 (Pbx)
Fax : +90 216 445 86 82
E-mail : ustek@ustek.com.tr
   
Branch Office:
   

Isa Celebi Sok. No:6/A

Buyukada / ISTANBUL
   
Phone : +90 216 382 20 28
   
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