Core Viewpoint - Yunnan Zheye's subsidiary produces photovoltaic products, specifically germanium monocrystals for solar cells, which are primarily used in high-efficiency solar germanium batteries for applications in space vehicles like satellites [1] Group 1: Company Overview - The subsidiary's project for germanium crystal production for space solar batteries is an expansion and enhancement of existing production lines [1] - The products have been supplied in bulk to downstream customers for several years, indicating a stable market presence [1] Group 2: Product Characteristics - Solar germanium batteries are noted for their high photoelectric conversion efficiency and stable performance [1] - These batteries are predominantly utilized in specialized fields such as space exploration [1]

证券日报网讯云南锗业（002428）8月13日在互动平台回答投资者提问时表示，公司生产的光伏级锗产 品太阳能电池用锗单晶片主要用于生产太阳能锗电池等，太阳能锗电池具有光电转换效率高、性能稳定 等特点，多用于空间飞行器(如人造地球卫星)等领域。具体客户信息因涉及公司经营细节或与客户的相 关保密约定，公司不便回复。 ...

Core Viewpoint - Yunnan Germanium stated that the amount of germanium single crystal chips used in solar cells for each space vehicle varies significantly based on design and size factors, and there is currently no authoritative organization that has published relevant measurement data [2] Company Summary - Yunnan Germanium responded to investor inquiries on August 13 regarding the usage of germanium in solar cells for space vehicles [2] - The company highlighted the variability in germanium usage due to different design and volume factors of space vehicles [2]

云南锗业（002428.SZ）8月13日在投资者互动平台表示，公司生产的光伏级锗产品为太阳能电池用锗单 晶片，下游客户以外延生产厂商为主，公司并未直接对接终端客户。近三年公司光伏级锗产品的营业收 入分别为：2022年约5493万元，2023年约7584万元，2024年约10559万元。目前公司光伏级锗产品太阳 能锗晶片产能为30万片/年（4英寸）、20万片/年（6英寸）。经董事会批准，公司于近期实施建设"空间 太阳能电池用锗晶片建设项目"，该项目计划建设期18个月，计划在现有产能基础上新建，最终形成年 产250万片锗晶片生产能力。 （文章来源：每日经济新闻） 每经AI快讯，有投资者在投资者互动平台提问：董秘您好，蓝箭航天已启动IPO，请问云南锗业的光伏 级锗电池是否为其供应商？近三年销售收入大概是什么量级？在近轨卫星高频发射的未来三年里，公司 产能储备如何？ ...