by Aybars Meric 28 Ocak 2014 Contact Form SecurIty QuestIon: WhIch one is bIgger? 4 or 7? Headquarter Yaşamkent Mah. 3147 Sokak No: 10-12P.K. 06810 Çankaya / ANKARAT: +90 (312) 225 41 73F: +90 (312) 225 41 74