The document provides information on Hindustan Petroleum Corporation Limited (HPCL), a government of India enterprise. It details that HPCL operates two major refineries in Mumbai and Vishakhapatnam, has a marketing network across India, and saw significant growth in turnover from 1984 to 2010. The document also lists HPCL's main business units and petroleum products, which include petrol, diesel, aviation turbine fuel, and LPG. It concludes by listing some information tools used at HPCL, such as email, an indent management system, internet, and SMS.