Mexico Exports of clays, andalusite, kyanite, sillimanite, mullite, chamotte, dinas earths to Hong Kong was US$7 during 2016, according to the United Nations COMTRADE database on international trade. Mexico Exports of clays, andalusite, kyanite, sillimanite, mullite, chamotte, dinas earths to Hong Kong - data, historical chart and statistics - was last updated on May of 2024.