Turkey's Leading Refinery

Quality Policy


As ONSA Refinery, in order to be a global company in globalized markets, we guarantee to determine customer needs and expectations properly and rehabilitate the quality of the process, product and service to reply these expectations with the participation of employees.The base of our success relies upon the constitution of corporate culture consciousness by providing all our colleagues to work effectively and in cooperation. In
line with the total quality approach as ONSA Refinery, to improve and enhance our quality continuously is a fundamental responsibility of all of us.All our employees work with an approach that is compatible, supportive and improving of ISO 9001, 14001 and OHSAS 18001 systems and also ISO 17025 system for our laboratory team.