At ONSA Refinery, we are committed to becoming a global company by continuously improving our processes to meet and exceed customer needs and expectations in an ever-globalizing market — through the active participation of all our employees.

The foundation of our success lies in the effective collaboration and shared dedication of our entire team, which together form the core of our corporate culture.

In line with the principles of Total Quality Management, continuously improving and enhancing quality is the fundamental responsibility of everyone at ONSA Refinery.

All our employees operate in full compliance with ISO 9001, ISO 14001, and OHSAS 18001 standards, while our laboratory team also works in accordance with ISO 17025 — maintaining a supportive, compliant, and improvement-oriented approach in all operations.