博云新材：公司未直接参与雅下水电站项目

Group 1 - The company, Boyun New Materials (002297), clarified that it has not directly participated in the Yaxia Hydropower Station project [1] - A subsidiary of the company, Boyun Dongfang, has previously provided materials for shield machine tools to China Railway Construction Heavy Industry indirectly, but the overall gross margin for hard alloy products, including shield machine tools, is low [1] - The contribution of shield machine tool materials to Boyun Dongfang's profits is currently minimal [1]