1. Indian Oil Corporation Ltd. - Panipat Refinery
2. Indian Oil Corporation Ltd. - Mathura Refinery.
3. IBP Ltd. Corba
4. Saw Pipes Ltd
5. Toyo Engineering Ltd.
6. ECC Const. Group, Larsen and Tourbo Ltd
7. Sunstar Lubricants Ltd.
8.  Indian Oil Corporation Ltd., Baroda