South Manganese Investment Limited, an investment holding company, engages in the manganese mining, ore processing, and downstream processing operations in Mainland China, rest of Asia, Europe, and North America. It operates through four segments: Manganese Mining, EMM and Alloying Materials Production, Battery Materials Production, and Other Business. The Manganese Mining segment mines and produces manganese products, including manganese concentrates and natural discharging manganese powder and sand. The EMM and Alloying Materials Production segment mines and processes ores used in hydrometallurgical processing for/and production of electrolytic manganese metal and manganese briquette, and pyrometallurgical processing to produce silicomanganese alloy and ferromanganese.