Hsikwangshan Twinkling Star Co., Ltd.
State-controlled Chinese antimony miner and smelter headquartered in Lengshuijiang, Hunan; operates the Hsikwangshan mine complex — the world's largest antimony deposit, mined continuously since the 1890s; produces approximately 25% of global antimony supply; fully integrated from ore to antimony trioxide; key supplier to Chinese flame retardant, semiconductor, and ammunition industries