星帅尔：子公司目前主要从事太阳能光伏组件的研发、生产和销售

Group 1 - The company, XingShuaiEr, is primarily engaged in the research, production, and sales of solar photovoltaic modules, including various types such as PERC, TOPCon, and HJT [1] - The company is committed to staying updated on industry advancements and will adhere to information disclosure regulations if there are relevant developments [1]