• Oil & Natural gas corporation (ONGC)
• Hindustan petroleum corporation Ltd.(HPCL)
• HPCL-Mittal Energy Limited (HMEL) – Bhatinda (HMEL)
• Nucleur power corporation of India (NPCIL)
• Neyveli lignite corporation limited (NLCL)
• ACC Cement Ltd.
• Andhra Sugar Ltd.
• Aquatech Asia (P) Ltd.
• Atul Ltd.
• Aditya Birla Nuvo Ltd, Veraval (A Unit of Indian Rayon)
• Aditya Birla Chemicals Ltd., Thailand
• Birla Cellulosic Ltd.
• Bihar Caustic & Chemicals Ltd.
• BASF Ltd, Manglore
• BMM Ispat Ltd.
• Chemplast Sanmar Ltd.
• Century Royon Ltd.
• Century Pulp & Paper Ltd.
• Coromandel Fertilisers Ltd.
• DCW Ltd.
• Doshi Ion Exchange Ltd.
• Essar Steel Ltd,
• Flsmidth Minerals Pvt. Ltd.
• Gas Authority India Ltd.
• Grasim Industries Ltd.
• Gujarat Alkalies & Chemicals Ltd. Baroda.
• Gujarat State Fertilizer & Chemicals Ltd.
• Gujarat Ambuja Cements Ltd.
• Gujarat Paguthan Energy Corpn. Pvt. Ltd.
• Gujarat Mineral Development Corporation Ltd.
• Godavari Fertilizers & Chemicals Ltd.
• Gujarat Narmada Valley Fertlisers Company Ltd.
• Godavari Fertilizers & Chemicals Ltd.
• Gujarat Narmada Valley Fertilisers Company Ltd.
• Hindustan Dorr Oilver Lever Ltd., Mumbai
• Hindustan Zinc, Udaipur
• Hindustan Petroleum Corp. Ltd., Vizag., Mahul
• Heubach Colour Pvt. Ltd.
• Hikal Chemicals Ltd, Taloja.
• Hindalco Industries Ltd., Dahej, Punjab
• Hygrade - Pallets Ltd.

• IB Thermal Power Corporation (A Govt Of India Undertaking) AES Group.
• IFFCO, Kandla, Kalol, Paradeep, Anola
• Indian Petrochemicals Corporation Ltd.
• Indian Oil Corporation Ltd.
• Indian Cements Ltd.
• Indian Organic Chemicals Ltd.(IOCL)
• J K Paper Ltd.
• Jsw Steel Ltd. Bellary.
• Jindal Stainless Steel Ltd.
• KRIBHCO, Hazira.
• Kilburn Chemicals Ltd.
• Kanoria Chemicals Ltd.
• Larsen & Toubro Ltd. ECC Group. Chennai, Delhi, Calcutta, Ahmedabad
• Larsen & Toubro Ltd. EBG Group. Mumbai
• Madras Cement Ltd.
• Manglore Chemical & Fertilisers Ltd.
• Manglore Refinery & Petrochemicals Ltd. Manglore. (MRPL)
• Nirma Limited, Bhavnagar
• Nuclear Power Corporation
• National Thermal Power Corporation. (NTPC)
• National Aluminium Company Ltd.
• Pidilite Industries Ltd.
• Prisam Cement
• Reliance Industries Ltd. Patalganga, Jamnagar, Hazira, Nagothani, Dahej
• Saurashtra Chemicals Ltd.
• South Asea Tyres Ltd, Aurangabad.
• Southern Iron & Steel Company Ltd.
• Sterlite Industries Ltd., Silvasa, Tuticorin
• Sudarshan Chemical Industries Ltd.
• Sirpur Paper mills
• Solaris Chemtech Ltd.
• United Phosphorous Ltd.
• Ultratech Cement Ltd.
• Tide Water Oil Company India Ltd.
• Vedanta Group
• Welspun Gujarat Sthal Rohren Ltd.
• Yokogawa India Ltd.

List of Some Consultants

• EIL
• UDHE
• TOYO
• MECON
• JACOB
• KPG