| The Nature Conservancy |
| IEC Fabchem Limited |
| Thirumalai Chemicals Limited |
| CHEMPLAST SANMAR LIMITED |
| Maccaferri Environmental Solutions Private Limited |
| Rail Vikas Nigam Limited |
| Common Code |
| Cochin Shipyard Ltd |
| TATA CONSULTANCY SERVICES LIMITED |
| United Nations Development Programme (UNDP) |
| L&T TECHNOLOGY SERVICES LIMITED |
| Bharat Heavy Electricals Limited - Industrial Systems Group |
| Bharat Heavy Electricals Limited |
| Ecole Polytechnique Federale de Lausanne |
| ICLEI South Asia |
| CHOLAMANDALAM INVESTMENT AND FINANCE COMPANY LIMITED |
| Public Works Department |
| Tamil Nadu Urban Infrastructure Financial Services Limited |
| Kavin Engineering and Services Private Limited |
| Larsen and Toubro Limited Infastructure Vertical |
| Jawaharlal Nehru Port Trust |
| Vadodara Bharuch Tollway Limited |
| Executive Engineer |
| Aurobindo Realty & Infrastructure Private Limited |
| Radhe Structopair Pvt. Ltd. |
| M & B ENGINEERING LIMITED |
| Fullerton India Credit Company Limited |
| AIRPORTS AUTHORITY OF INDIA |
| VOESTALPINE VAE VKN INDIA PRIVATE LIMITED |
| Indian Additives Limited |
| Glazing Society of India |
| M/s Indian Institute of Technology Tirupati |
| Department of Environment |
| DLF LIMITED |
| Virtusa Consulting Services Private Limited |
| Konkan Railway Corporation Ltd. |
| FOXCONN TECHNOLOGY (INDIA) PRIVATE LIMITED |
| Megawide Construction DMCC |
| NATIONAL HIGHWAY AUTHORITY OF INDIA |
| M/s West Bengal Highway Development Corporation Ltd |
| Chennai Metro Rail Limited |
| CHENNAI PETROLEUM CORPORATION LIMITED |
| Nuvoco Vistas Corp. Ltd. |
| RASTA CENTRE FOR ROAD TECHNOLOGY |
| Roads and Bridges Development Corporation of Kerala Ltd. |
| L&T Construction |
| COCHIN INTERNATIONAL AIRPORT LTD |
| Dr. Mrs. Jamuna Saravanaraja |
| Gauff Consultants |
| Rajiv Gandhi National Institute of Youth Development |
| Tata Steel |
| RAMKY ENERGY AND ENVIRONMENT LIMITED |
| ROBERT BOSCH ENGINEERING AM DBUSINESS SOLUTIONS PRIVATE LIMITED |
| UNITED NATIONS DEVELOPMENT PROGRAMME |
| Krishna Conchem Product Pvt. Ltd |
| NK INFRA JV |
| Tamilnadu Waste Management Limited |
| Department of Science Technology & Environment |
| INTERNATIONAL CENTRE FOR AUTOMOTIVE TECHNOLOGY |
| PS Group Realty Private Limited |
| Tamilnadu Slum Clearance Board |
| Concrete Additives & Chemicals Pvt.Ltd |
| SANFIELD INDIA LIMITED |
| Infosys Limited |
| German Corporation for International Co-operation |
| Larsen and Toubro Limited Construction Water and Effluent Treatment IC |
| Sns Infracon Private Limited |
| Ooze Architects |
| Larsen and Toubro Limited |
| L&T INFRASTRUCTURE DEVELOPMENT PROJECTS |
| URC Constrcution Private Limited |
| KCP Engineers Private Limited |
| AFCONS INFRASTRUCTURE LIMITED |
| L & T Construction Water & Effluent Treatment Ic |
| Tamilnadu Generation And Distribution Corporation Limited |
| AM Corporate Social Responsibility Foundation |
| Webdatacast L.L.C |
| RDS Project Limited |
| Tamil Nadu Housing Board |
| GE T&D India Limited |
| Eco Chimneys Private Limited |
| NLC India Limited |
| Patil Rail Infrastructure Private Limited |
| SAINT - GOBAIN INDIA PRIVATE LIMITED- SEKURIT BUSINESS |
| Tamilnadu Trade Promotion Organisation |
| S S Infrastructure Development Consultants Limited |
| Freyssinet Dynamic Consortium |
| VIVO Mobile India Private Limited |
| CMK Projects Private Limited |
| Saint - Gobain Research India Limited |
| McDermott International Management S. DE.RL |
| L&T Construction Heavy Civil Infrastruture |
| Kovai Medical Center and Hospital Limited |
| L&T Geostructure LLP |
| L&T Construction Water & Effluent Treatment IC |
| R Karunanidhe Constructions Private Limited |
| NNE Limited |
| Sri Ram Samaj |
| Vastunidhi |
| URC Construction Private Limited |
| Madras Export Processing Zone |
| Anjali Hotels Private limited |
| Utracon Structural Systems Private Limited |
| RR Infraa Construction |
| Kerala Road Fund Board |
| Micro Labs Limited |
| Roads and Bridges Development Corporation of Kerala Limited |
| Lansum Properties LLP |
| Garware Technical Fibres Limited |
| Southern Railways |
| National Disaster Management Authority |
| P S T Engineering Construction |
| P&C Projects Private Limited |
| Engineering Project Management Consultancy and Research Private Limited |
| Kerala Transport Development Finance Corporation Limited |
| S Kadirvel and Company |
| Bilaspur Central Division |
| CPWD MADRAS CENTRAL DIVISION I |
| Milma Ernakulam Regional Co-operative Milk Producers Union Limited |
| Zamil Steel Buildings India Private Limited |
| Ashiana Housing Limited |
| V R Techniche Consultants Private Limited |
| HLL Infra Tech Services Ltd |
| Larrsen and Toubro Limited |
| GREENVIRONMENT INNOVATION AND MARKETING INDIA PVT LTD |
| Olympia Cyberspace Private Limited |
| Krishi Infratech |
| ARKIE ATELIER DESIG INDIA(P) LIMITED |
| Central Warehousing Corporation |
| Intertouch Metal Buildings Private Limited |
| Strata Geosystems India Private Limited |
| MRF limited |
| Teemage Builders Private Limited |
| Garrison Engineer (P) NW |
| Andhra Pradesh Pollution Control Board |
| Keller Ground Engineering India Private Limited |
| Eco Protection Engineers Private limited |
| Tamilnadu Cricket Association |
| Skilled Construction Company Limited |
| K V Joseph and sons Private Limited |
| HQ Project Seabird |
| Cera Chem Private Limited |
| Development Consultants Private Limited |
| Bharat Petroleum Corporation Limited |
| Maradu Municipality |
| JTP Consulting Engineers Private Limited |
| Amara Raja Infra Private Limited |
| South Central Railway |
| University of East Anglia |
| L&T Hydrocarbon Engineering Limited |
| Hindustan Petroleum Corporation Limited |
| Pennar Industries Limited |
| Tata Consultancy Service Limited |
| Mahindra Residential Developers Limited |
| Larsen and Toubro Limited Construction Water and Effluent Treatment IC 1 |
| Highways Department |
| KREA University |
| Erode Common Effluent Treatment Plant Private Limited |
| Nagesh Consultants |
| L&T Construction, Water and Effluent Treatment IC |
| Aadriks Engineering and Consultants Private Limited |
| BGR Energy Systems Limited |
| Vijay Nirman Company Private Limited |
| Trif Real Estate and Development Limited |
| M/s Kitco Ltd |
| Water Systems India Private Limited |
| Triveni Engicons Private Limited |
| Chief Construction Engineer (R&D) Delhi |
| Ratnagiri Gas and Power Private Limited |
| Volta Green Structures Private Limited |
| Baashyaam Constructions Private Limited |
| Kevadiya Construction Private Limited |
| Technomedia Solutions Private Limited |
| Indian Railways |
| Tirunelveli Smart City limited |
| Chemical Industries Association |
| Viki Industries Private Limited |
| Ankita Construction |
| M/s Krishi Infratech |
| L&T Construction Water and Effluent Treatment IC |
| Sripath Technologies LLC |
| C R Narayana Rao Consultants Pvt. Ltd. |
| Tamilnadu Road Infrastructure Development Corporation |
| TATA Projects Limited |
| Lekcon Infrastructure Private Limited |
| Kerala Highway Research Institute |
| Rubber Board |
| Kannur University |
| Tamilnadu Road Development Company Limited |
| Tata Bluescope Steel Private Limited |
| Sharp Business Systems India Private Limited |
| Ionixx Technologies Pvt. Ltd. |
| Kumaran Systems Pvt. Ltd. |
| VA TECH WABAG LTD |
| NTC Engineering and PMC LLP |
| Indian Commerce & Industries Company Private Limited |
| Shree Balaji Engicons Limited |
| RSP Design Consultants (India) Private Limited |
| Duke University |
| Tata Projects Limited |
| Hydromaterials Private Limited |
| National Highways |
| Omkar Constrction Company |
| Government of National Capital Territory of Delhi |
| Kumarapalayam Green Kavery Dyeing Cluster |
| Garrison Engineer |
| Tide Water Oil Company(India) Limited |
| Cherian Varkey Construction Company Private Limited |
| Proclaim Insurance Surveyors and Loss Assessors Private Limited |
| Skipper Limited |
| Valmont Structures Private Limited |
| Dilip Buildcon Limited |
| PNC Infratech Limited |
| JMC Constructions Private Limited |
| Kolkata Metro Rail Corporation Limited |
| L&T INFRASTRUCTURE ENGINEERING LIMITED |
| Sai Trust |
| Tube Investments of India |
| Zoho Corporation Private Limited |
| Tidel Park Limited |
| DP World Chennai |
| NCC Limited |
| SMG Design Inc |
| SATRA Infrastructure Management Services Limited |
| VENSA Infrastructure Limited |
| KNR Constructions Limited |
| Navin Housing and Properties Private Limited |
| SD INFRA |
| SAI Consulting Engineers Private Limited |
| Kirby Building Systems and Structures India Private Limited |
| Peb Steel Lloyd India Limited |
| Tamil Nadu Infrastructure Fund Management Corporation Limited |
| Madras Fertilizers Limited |
| Creative Architect and Interiors |
| SAINT GOBAIN INDIA PRIVATE LIMITED (RESEARCH & DEVELOPMENT) |
| Ultratech Cement Limited |
| Defence Research and Development Organisation |
| Central Government Postal Civil Division |
| Indian Institute of Technology Madras |
| Sobha Limited |
| Berger Paints India Limited |
| Ramalingam Construction Company Private Limited |
| Hevea Rubber Technologies Private Limited |
| B G Shirke Construction Technology Private Limited |
| Deevin Seismic Systems Private Limited |
| Karnataka Public Works Department |
| Structural Specialities and Projects India Private Limited |
| Ramky Enviro Engineers Limited |
| Sree Shyam Sayi Corporation Private Limited |
| NBCC (INDIA) LIMITED |
| DR Kelkar Designs Private Limited |
| Pollucare Engineers India Private Limited |
| Lancewood Infra Private Limited |
| Pennar Engineering Building Systems Limited |
| LEA Associates South Asia Private Limited |
