Spain Imports from Portugal of Bitumen and Asphalt (Natural), Bituminous or Oil Shale, Tar Sands was US$530 during 2025, according to the United Nations COMTRADE database on international trade. Spain Imports from Portugal of Bitumen and Asphalt (Natural), Bituminous or Oil Shale, Tar Sands - data, historical chart and statistics - was last updated on June of 2026.