1. Indian Oil Corporation Ltd.
2. Hindustan Petroleum Corporation Ltd.
3. Bharat Petroleum Corporation Ltd. (BPCL)
4. Oil & Natural Gas Corporation (ONGC)
5. Total SA
6. Tiki Tar Industries India Ltd.
7. Agarwal Industrial Corporation Ltd.
8. Juno Bitumix Pvt. Ltd.
9. Universal Bituminous Industries Pvt. Ltd.
10. Swastik Tar Industries