• ANKARA CHAMBER OF COMMERCE (ATO)
• ANKARA CHAMBER OF INDUSTRY (ASO)
• ASSOCIATION OF TURKISH CONTRACTORS (INTES)
• TURKISH ASSOCIATION OF ASPHALT CONTRACTORS (ASMUD)
• INTERNATIONAL ROAD FEDERATION (IRF)
• TURKISH CONTRACTORS ASSOCIATION (TMB)
• FOREIGN ECONOMIC RELATIONS BOARD (DEIK)
• WORLD WATER COUNCIL (WWC)
• TURKISH CONFEDERATION OF EMPLOYER ASSOCIATIONS (TISK)
• TURKISH TOURISM INVESTORS ASSOCIATION (TYD)
• TURKISH ROAD ASSOCIATIONS
• AMERICAN BUSINESS FORUM IN TURKEY (ABFT)
• THE WORLD TRADE CENTER ASSOCIATION

KOLIN CONSTRUCTION is the holder of the,

• CONTRACTOR'S LICENSE (UNLIMITED)
• INTERNATIONAL CONTRACTOR LICENSE
• NATO SECURITY CLEARENCE