Dubai futures prompt-month EFS flips to negative on sweet crude surplus By admin Posted September 14, 2020 In In the News Dubai futures prompt-month EFS flips to negative on sweet crude surplus2020-09-142020-09-14/wp-content/uploads/liberty-petroleum-icon-logo2.pngLiberty Petroleum Corp/wp-content/uploads/liberty-petroleum-icon-logo2.png200px200px The prompt-month Brent/Dubai Exchange of Futures for Swaps remained in negative territory in mid-morning trade…