This document provides an overview of Indian Oil Corporation Ltd (IOCL), India's largest company by sales. It discusses IOCL's vision, mission, values and objectives which center around serving national oil security, maximizing stakeholder value, attaining technological leadership, and enriching communities. The document also outlines IOCL's organizational structure and subsidiaries. It provides background on IOCL's formation, size and market share in India's petroleum products market.