云南锗业：公司控股子公司生产的半绝缘砷化镓晶片（衬底）可用于生产射频器件

Group 1 - The core viewpoint of the article is that Yunnan Zheye's subsidiary, Yunnan Xinyao Semiconductor Materials Co., Ltd., produces semi-insulating gallium arsenide wafers that can be used in RF device manufacturing, with applications in various fields including mobile phones [1] - Currently, there is no customer feedback indicating the use of these wafers for mobile phone antenna production [1]