HINDUSTAN PETROLEUM CORPORATIO MANGALORE REFINERY & PETROCHEM CHENNAI PETROLEUM CORPORATION RELIANCE INDUSTRIES LTD. BHARAT PETROLEUM CORPORATION L CONTINENTAL PETROLEUMS LTD. RAJASTHAN GASES LTD. REAL ECO-ENERGY LIMITED INDIAN OIL CORPORATION LTD. SANMIT INFRA LIMITED Omnipotent Industries Limited RESGEN LIMITED