This document provides an overview of Reliance Industries Limited (RIL), India's largest private sector company. It discusses RIL's history beginning as a textile company founded by Dhirubhai Ambani in 1957. Over time, RIL diversified into petroleum refining and petrochemicals. It now operates major manufacturing facilities across India in sectors like energy, materials and telecommunications. RIL has become a global leader in petrochemicals and is India's largest private sector company with annual revenues exceeding $30 billion.