云南锗业：光伏级锗产品太阳能电池用锗单晶片主要用于生产太阳能锗电池等

Core Viewpoint - Yunnan Ge Industry (002428) produces photovoltaic-grade germanium products, specifically germanium single wafers for solar cells, which are known for their high photoelectric conversion efficiency and stable performance, primarily used in space vehicles such as artificial satellites [1] Group 1 - The company's solar germanium batteries are utilized in high-efficiency applications [1] - The specific customer information is confidential due to business operational details and agreements [1]