Government 1. Oil and Natural Gas Corporation Limited (ONGC) 2. Coal India Limited (CIL) 3. Gas Authority Of India Limited 4. Bharat Petroleum Corporation Limited 5. Steel Authority of India Limited 6. National Thermal Power Corporation Limited
Private Sector 1. Food industry 2. Petroleum industry 3. Textile industry 4. Chemical manufacturing industry 5. Rubber industry 6. Paper industry 7. Plastics industry 8. Cement industry 9. Public sector industry 10. Fertilizer industry