refinery in India to have completed the diesel hydrodesulfurization project in June 1999, when the refinery started production of HSD with low sulfur content of 0.25% wt (max). See also Indian Oil Corporation References External links Indian Oil Corporation Limited IndianOil Express IndianOil Tenders Gujarat Refinery Oil refineries in India Indian Oil Corporation Buildings and structures in Gujarat Companies based in Gujarat Energy in Gujarat Economy of Vadodara Energy infrastructure completed in 1965 Non-renewable resource companies established in 1965 1965 establishments in Gujarat India–Soviet Union relations Soviet foreign aid Indian Oil Corporation buildings and structures 20th-century architecture in India