Singapore Exports of clays, andalusite, kyanite, sillimanite, mullite, chamotte, dinas earths to Angola was US$2 during 2019, according to the United Nations COMTRADE database on international trade. Singapore Exports of clays, andalusite, kyanite, sillimanite, mullite, chamotte, dinas earths to Angola - data, historical chart and statistics - was last updated on May of 2024.