国晟科技：公司主营业务光伏板块包括大尺寸高效异质结（HJT）光伏电池的研发、生产、销售

Core Viewpoint - Guosheng Technology focuses on the photovoltaic sector, specifically in the research, production, and sales of large-sized high-efficiency heterojunction (HJT) solar cells and components, while currently not engaging in space photovoltaic business [2] Group 1: Business Overview - The company's main business includes the development, production, and sales of HJT solar cells [2] - The company also produces and sells components such as HJT, TOPCON, and PERC [2] - HJT components are primarily used in centralized and distributed power station applications [2]