Manufacturing and processing of aluminum coils, coil steel coating, aluminum-plastic panels, aluminum curtain wall panels, aluminum ceilings, aluminum profiles and decorative materials, and electrical panels (projects involving licensed operations are operated with a license); photovoltaic power generation; road general cargo transportation; engaged in the import and export of goods and technology import and export, except for goods and technologies that are restricted by the state or prohibited from being imported and exported. Licensed projects: General construction projects: technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; solar power generation technical services; wind power generation technical services; sales of photovoltaic equipment and components; sales of power electronic components; general mechanical equipment installation services; sales of wind turbines and parts Sales; manufacturing of building decoration, plumbing pipe parts and other construction metal products; manufacturing of new building materials (excluding hazardous chemicals); sales of building materials; sales of building decoration materials; manufacturing of metal materials; sales of metal materials; sales of metal matrix composite materials and ceramic matrix composite materials; sales of new metal functional materials; research and development of metal products