KOCA Group has entered into partnership with several companies for overseas projects. Major co-operations are as follows:

Subenko Gulf Engineering and Construction Company W.L.L. – Doha / QATAR

Subenko Gulf WLL has been established in Qatar by Subenko Alt Yapı Mühendislik ve İnşaat
A.Ş. which is a subsidiary of KOCA Group for infrastructural projects. Subenko Gulf has
completed Infrastructure and Port Building Works of Container Terminal Berth Project in which the General Contractor was STFA Marine Company and the client was Qatar Petroleum Company.