Pakistan's refining sector is set to receive an investment of nearly $6bn as all five oil refineries Pak Arab Refinery Limited (PARCO), Pakistan Refinery Limited (PRL), National Refinery Limited (NRL), Cnergyico and Attock Refinery Limited (ARL) reaffirmed readiness to sign agreements under the Brownfield Refinery Upgradation Policy, with the signings expected early next month. The upgrades are