- Bhabha Atomic Research Centre, Mumbai
- Bharat Heavy Electricals Ltd.
- Blue Star Ltd.
- BSES, Mumbai
- Central Government Employees Welfare Housing Organisation
- Delhi Electric Supply Undertaking
- Engineering Projects (I) Ltd.
- Hindustan Construction Co. Ltd
- Hindustan Petroleum Corporation Ltd
- Haryana Power Generation Corporation Ltd
- Indian Tourism Development Corporation
- Lanco Construction, Hyderabad
- Army Sports Institute
- Tata Power Company Ltd
- Maharashtra Elektro-Smelt Ltd., Chandrapur (A Subsidiary of Steel Authority of India)
- Ministry of Defence
- National Dairy Development Corporation Ltd
- National Hydroelectric Power Corporation Ltd
- Nuclear Power Corporation Ltd
- Public Health Engineering, J & K Govt
- Philips, India
- Unitech Limited
- Uttaranchal Power Corporation Ltd
- Videsh Sanchar Nigam Ltd
- Maharashtra State Electricity Board
- Delhi Metro Rail Corporation Ltd
