云南锗业(002428.SZ)：目前材料级锗产品主要为锗锭(金属锗)、二氧化锗

Core Viewpoint - Yunnan Germanium Co., Ltd. focuses on the production of various grades of germanium products, including metal germanium and germanium dioxide, with applications in multiple high-tech fields [1] Product Overview - The company’s material-grade germanium products primarily include germanium ingots (metal germanium) and germanium dioxide [1] - In terms of deep processing, the photovoltaic-grade germanium products mainly consist of germanium wafers for solar cells, while infrared-grade germanium products include infrared single crystals and blanks (optical components), germanium lenses, infrared thermal imaging devices, and optical systems [1] - Fiber optic-grade germanium products are primarily tetra-chloride germanium used in fiber optics, and compound semiconductor materials mainly consist of gallium arsenide wafers and indium phosphide wafers [1] Application Fields - The company’s products are utilized in various sectors, including infrared optoelectronics, solar cells, fiber optic communications, light-emitting diodes, vertical-cavity surface-emitting lasers (VCSELs), high-power lasers, fiber optic communication lasers, and detectors [1]