China has quietly issued its first 2025 rare earth mining and smelting quotas without the typical public statement, sources with knowledge of the matter said this week, another sign of Beijing tightening its control over the crucial sector.

Total cargoes of the magnets rose to 3,188 tons last month, according to Chinese data on Sunday, more than double volumes of 1,238 tons in May.

China's exports of rare-earth magnets to the United States in June surged more than six times from May levels, following successful Sino-U.S. trade talks.