Asian Paints
Bharat Petroleum Corporation Ltd.
Bharat Heavy Plates and Vessels Ltd.
Bharat Heavy Electricals Ltd.
Chambal Fertilizers and Chemicals Ltd.s
Chennai Petro Chemicals Ltd.
Engineering Projects India Ltd.
Finolex Pipes Ltd.
Gas Authority of India Ltd.
Gujarat Alkalies & Chemicals Ltd.
Gujarat Chemical Port Terminal Company Ltd.
Gujarat State Fertilizers & Chemicals ltd.
Gujarat Narmada Valley Fertilizer Co. Ltd.
Hindustan Petroleum Corporation Ltd.
Indian Oil Corporation Ltd. - All Refineries
Indian Oil Tanking Ltd.
Indian Petrolchemicals Corporation Ltd.
Jindal
Mangalore Refinery & Petrochemicals Ltd.
Maradia Chemicals Ltd.
Mitsubishi Heavy Industries Ltd. (Japan)
Nagarjuna Fertilizers & Chemicals Ltd.
Oil & Natural gas Corporation Ltd.
ONGC
Rashtriya Chemicals & Fertilizers Ltd.
Siemens Ltd.
Stork Engineers & Contractors B.V.
Transpek Silox Ltd.
Torrent Gujarat Biotech Ltd.