Seychelles Imports of bitumen and asphalt (natural), bituminous or oil shale, tar sands from Thailand was US$1 during 2019, according to the United Nations COMTRADE database on international trade. Seychelles Imports of bitumen and asphalt (natural), bituminous or oil shale, tar sands from Thailand - data, historical chart and statistics - was last updated on May of 2024.