道氏技术：公司阴极铜产品直接对外销售

Group 1 - The company aims to refine its existing business and continuously enhance its core competitiveness [2] - The company's cathode copper products are sold directly to external markets, indicating a mature and stable business model with good cash flow [2] - The overall development trend of the company is positive, and there are currently no plans to extend into downstream products such as copper foil and composite copper foil [2]