• GAIL (India) Limited, Guna
• GAIL (India) Limited, Pata
• GAIL (India) Limited, Vadodara
• GAIL (India) Limited, Guna
• Hindustan Gas Industries Limited, Halol
• Oil and Natural Gas Corporation Limited, Gandhar
• Reliance Industries Limited, Hazira

Overseas Units

• Oman Refinery and Petrochemicals Company L.L.C.
• Oman Polypropylene L.L.C.
• Aromatics Oman L.L.C.