HONG KONG — China said on Tuesday that it would begin banning the export of several rare minerals to the United States, an escalation of the tech war between the world’s two biggest powers. The move comes a day after the Biden administration tightened Chinese access to advanced American technology.

Beijing's curbs follow latest US limits on Chinese chip sector Exports of gallium, germanium to US already stalled Antimony prices surge this year as China stifles exports Dec 3 (Reuters) - China on Tuesday banned exports to the United States of the critical minerals gallium,

China will strengthen controls on U.S.-bound exports of some materials that are used in chip making and can have military applications, a move that comes amid rising trade tensions between the two countries.