» ABAN Construction ( Chennai )
» Aneri Construction ( Surat )
» Becktel ( India ) Ltd.
» Bridge & Roof Co. ( I ) Ltd. ( Mumbai )
» Corrosion Control Services ( Mumbai )
» Durha Components Pvt. Ltd. ( New Delhi )
» Essar Projects Ltd. ( Surat )
» G. K. Engineering Works ( Rajmundri )
» Gail India Ltd.( Vishakhapatnam )
» Gannon Dunkerly & Co. Ltd. ( Mumbai )
» Hitek Eng. Services ( Mumbai )
» Indian Oil Corporation Ltd. ( Rajkot, Begusarai - Bihar )
» Insul India Ltd. ( Chennai )
» Jaihind Projects Ltd. ( Ahmedabad )
» Kirloskar Brothers Ltd. ( Kirloskarwadi )
» Larsen & Toubro ECC Construction Group ( Mumbai. Chennai, Bangalore, Hyderabad)
» Lloyd Insulations ( I ) Pvt. Ltd. ( Mumbai, Delhi, Chennai )
» Mather & Platt ( I ) Ltd. ( Mumbai )
» Mideast Pipelines Products ( Mumbai )
» MIL Industries Limited ( Chennai )
» North Eastern Inspection Co. ( Dibrugarh - Assam )
» Nu. Calcutta Construction Co. ( Kolkata )
» Offshore Industrial Construction Pvt. Ltd. ( Mumbai )
» Offshore Testing & Inspection Services ( I ) Pvt. Ltd. ( New Mumbai )
» PSL Holdings Pvt. Ltd. ( Mumbai )
» Punj Lloyd Pvt. Ltd. ( Delhi )
» Ratra Fab Bells Pvt. Ltd. ( Delhi )
» Raychem RPG Limited ( Mumbai )
» Redhex Corrosion Control Pvt. Ltd. (Chennai )
» Reliance Industries. ( Mumbai, Panipat )
» Rustech Products Ltd. ( Mumbai )
» Steelage Industries Ltd. ( Mumbai, Chenai, Delhi )
» Tamilnadu Petroproducts Ltd. ( Chennai )
» Tata Projects Ltd. ( Mumbai )
» Teejan Trading & Contracting Co. L.L.C. ( Oman )
» Tyco Engineering & Construction Pvt. Ltd. ( Hyderabad, Bangalore )
» Unitech Mechanics Ltd. ( New Delhi )
» Vijay Industries Ltd. ( Mumbai )
» Wormald Fire Systems ( Singapore )