Sri Lanka Imports from Singapore of Bitumen and Asphalt (Natural), Bituminous or Oil Shale, Tar Sands was US$335 during 2015, according to the United Nations COMTRADE database on international trade. Sri Lanka Imports from Singapore of Bitumen and Asphalt (Natural), Bituminous or Oil Shale, Tar Sands - data, historical chart and statistics - was last updated on May of 2024.