恒邦股份：公司原材料主要依靠外购，自有矿山占比较少

Group 1 - The company primarily relies on external procurement for raw materials, with a small proportion sourced from its own mines [2] - The company has a dedicated raw materials department responsible for procurement, with extensive domestic and international sourcing channels [2] - The company plans to expand direct procurement from overseas mining enterprises to enhance control over raw material channels and further reduce procurement costs [2]