National Refinery Limited was incorporated in Pakistan on August 19, 1963 as a public limited company. The Company is engaged in the manufacturing, production and sale of a large range of petroleum products. The refinery complex of the Company comprises of three refineries, consisting of two lube refineries, and a fuel refinery added to the complex. The company has also commissioned Diesel Hydro De-sulphurisation (DHDS) and Isomerisation (ISOM) units during the financial years 2017 and 2018 respectively.