M/s. Larsen & Tubro Ltd. M/s Simplex Infrastructure Ltd
M/s. Duncans Industries Limited, Kanpur. M/s. Valentine Maritime Gulf LLC
M/s. Nagarjuna Fertilizers & Chemicals Ltd. Kakinada M/s. NOCIL, Mumbai

M/s. Refermech Engineering, Chennai.

M/s. Nirma Ltd, Bhavanagar.
M/s. Stewarts & Lloyds of India Ltd. M/s. Vijaya Tanks & Vessels Ltd.
M/s. Tube Products of India Ltd. M/s. Indian Oil Corporation Ltd, Panipat
M/s. Neyveli Lignite Corporation M/s. Grasim Industries Ltd, Harihar
M/s. Krrup Industries India Ltd. M/s. Leighton Contractors India Pvt. Ltd, Jamnagar.
M/s. Spic Jel Engineering Construction, Chennai. M/s. Tata Chemicals Ltd. Mithapur
M/s. Saipem UK Ltd. M/s. Reliance Gas Transportation Ltd.
M/s. NDT Laboratories Pvt. Ltd. M/s. Reliance Petroleum Ltd. Jamnagar
M/s. Indian Oil Corporation, Andaman. M/s. Precision Machine Tools, Chennai.
M/s. Pipava Shipyard Ltd, Gujarat. M/s. Metalex, Calcutta.
M/s RIL, Kakinada Gas Terminal. M/s. Aban Construction Ltd. Chennai
M/s Afcon Infra structure Ltd, Jamnagar M/s. Haldia Petrochemicals Ltd, Haldia.
M/s Mitsubushi, Haldia M/s. Electrowatt Engineering, Oman.
M/s Toshiba Construction M/s. Sengoa
M/s Powermech M/s Indwell
M/s Unitech M/s Finolex Industries - Ratnagiri
M/s Godrej