• Bharat Petroleum Corporation Limited
• Hindustan Petroleum Corporation Limited
• Indian Oil Corporation Limited
• Mangalore Refinery and Petrochemicals Limited
• Reliance Industries Limited
• Brahmaputra Cracker and Polymer Limited
• Haldia Petrochemicals Limited
• HPCL-Mittal Energy Limited
• Nayara Energy Limited
• ONGC Petro additions Limited