The Asian low sulfur fuel oil market opened the week firmer May 18 as supply concerns around the reopening of the Strait of Hormuz persisted. Talks between the US and Iran remain in an impasse, despite it being a key topic of discussion during the USChina summit. The Singapore 0.5%S marine fuel June-July swaps time spread was pegged at a backwardation of $48/ metric ton in midafternoon Asian trading May 18, up $2.90/mt from the of the spread at the May 15 Asian close. The Singapore 0.5%S marine fuel cargo’s differential to the Mean of Singapore Marine Fuel 0.5%S assessment rose $4.16/mt to a premium of $37.58/mt at the May 15 Asian close. In the high sulfur fuel oil market, cargo procurement interest has dampened amid healthy prompt supplies, which...