Serbia Exports of clays, andalusite, kyanite, sillimanite, mullite, chamotte, dinas earths to Slovakia was US$78 during 2020, according to the United Nations COMTRADE database on international trade. Serbia Exports of clays, andalusite, kyanite, sillimanite, mullite, chamotte, dinas earths to Slovakia - data, historical chart and statistics - was last updated on May of 2024.