General project: Promotion services for new material technology; Solar power generation technology services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Manufacturing of photovoltaic equipment and components; Manufacturing of lighting fixtures; Manufacturing of semiconductor lighting devices; Manufacturing of power electronic components; Sales of photovoltaic equipment and components; Sales of lighting fixtures; Sales of semiconductor lighting devices; Sales of solar thermal power generation equipment; Sales of solar thermal utilization equipment; Sales of optoelectronic devices; Electronic product sales; Sales of solar thermal utilization products; Internet sales (except for the sale of goods that need to be licensed); Retail of hardware products (except for projects that require approval according to law, business activities can be carried out independently based on the business license in accordance with the law)