Indian Oil Corporation?s Paradip Refinery Project has opened its Diesel Hydrotreater (DHDT) unit. The DHDT unit is designed to process 5.2 million metric tonne per annum (MMTPA) of blended gas oil to produce ultra low sulphur finished diesel having 10 ppmw sulphur (max). Paradip Refinery is designed to produce clean and environmental friendly next generation Euro-IV and Euro-V fuels.