Chamber of Mechanical Engineers Bakirkoy District Representation

Chamber of Architects Istanbul Greater City and Thrace Regional Representation

Chamber of Civil Engineers - Bakirkoy Representation

Стамбульская промышленная палата торговцев и ремесленников

Turkish Ready Mixed Concrete Association Construction Materials Laboratory

Chamber of Financial Advisors and Accountants

Kocasinan Soforler ve Otomobilciler Odasi

Steel Exporters' Association

Sefakoy Kamyon Kamyonetciler Minibusculer ve Soforler Odasi