内容概况：中国接地电阻测试仪行业目前已进入成熟发展阶段，呈现出市场规模稳步扩张、技术应用持 续深化的特点。2024年，中国接地电阻测试仪行业市场规模约为12.36亿元，同比增长13.92%。当前行 业竞争已从单纯的价格竞争转向技术性能、品牌服务和解决方案的综合较量，头部企业通过产品智能化 升级与应用场景拓展巩固市场地位。随着电力设施维护、新能源建设及工业安全标准提升，接地电阻测 试仪行业将在技术创新与市场需求双轮驱动下保持稳健发展态势。 一、行业概述 接地电阻测试仪按测试端子数量可分为二线法、三线法和四线法三类。二线法仅含L（线路）和E（接 地）两个端子，接线简单快捷，但无法消除测试线电阻，测量误差大，仅适用于快速筛查等精度要求不 高的场景。三线法增设P（电位探针）端子，通过电位降法可部分排除线阻影响，在精度与成本间取得 平衡，是工程验收和常规接地系统测量的主流选择。四线法采用开尔文四线制技术，配备E、ES、P、C 四个端子（含独立的电位检测和电流注入回路），能完全剔除引线及接触电阻干扰，测量精度最高、分 辨率可达0.1mΩ，适用于变电站、数据中心等对精度要求严苛的场合，但接线复杂且设备成本较高。总 体而言， ...

内容概况：当前，中国闪电定位仪行业正处在技术突破与规模化应用并行的关键发展阶段，整体呈现 出"技术迭代加速、应用场景深化、市场稳步扩张"的显著特征。2024年，中国闪电定位仪行业市场规模 约为1.25亿元，同比增长7.76%。在技术层面，行业正从传统的二维定位向三维立体探测、从单一地闪 监测向云闪地闪协同观测方向演进，探测精度和时空分辨率显著提升；在应用层面，随着气象防灾减 灾、电力系统安全、航空航天等领域对雷电监测要求的不断提高，闪电定位仪正从科研装备向业务化运 行系统快速转变。未来，随着国产化传感器与算法的持续优化，中国闪电定位仪产业有望在探测效率、 系统集成度和数据产品价值方面实现进一步突破。 相关上市企业：中光防雷（300414） 相关企业：陕西源杰半导体科技股份有限公司、广东风华高新科技股份有限公司、湖南艾华集团股份有 限公司、扬州扬杰电子科技股份有限公司、立讯精密工业股份有限公司、北京北斗星通导航技术股份有 限公司、北方夜视技术集团股份有限公司、浙江蓝特光学股份有限公司、湖北五方光电股份有限公司、 歌尔股份有限公司、深圳市华信天线技术有限公司、京信通信系统控股有限公司、鸿海精密工业股份有 限公司 ...

Group 1 - The company stated that its products have no applications in the space station sector [1] - The company does have applications in the commercial aerospace sector [1] - The company collaborates with key supporting enterprises in the aerospace field [1]

每经AI快讯，有投资者在投资者互动平台提问：请问贵公司有哪些产品适配商业航天领域使用？是否 已经有进行或推进中的项目？ 中光防雷（300414.SZ）12月2日在投资者互动平台表示，公司与航天领域的核心配套企业有合作。 （文章来源：每日经济新闻） ...

Market Overview - The communication equipment sector experienced a decline of 0.27% on November 27, with Meilixin leading the drop [1] - The Shanghai Composite Index closed at 3875.26, up 0.29%, while the Shenzhen Component Index closed at 12875.19, down 0.25% [1] Top Performers - Tongyu Communication (002792) saw a significant increase of 10.03%, closing at 21.62 with a trading volume of 576,300 shares and a transaction value of 1.207 billion [1] - LianTe Technology (301205) rose by 9.98%, closing at 134.73 with a trading volume of 196,100 shares and a transaction value of 2.507 billion [1] - Other notable gainers include Taicheng Light (300570) up 7.51%, Guanghetong (300638) up 7.09%, and Cambridge Technology (603083) up 5.95% [1] Underperformers - Meilixin (301307) experienced a significant drop of 11.70%, closing at 35.86 with a trading volume of 257,600 shares and a transaction value of 963 million [2] - Shida Group (600734) fell by 9.92%, closing at 5.54 with a trading volume of 3,512,400 shares and a transaction value of 76.67 million [2] - Other notable decliners include Ruisi Kanda (603803) down 6.35% and Changxin Bochuang (300548) down 3.84% [2] Capital Flow - The communication equipment sector saw a net outflow of 2.31 billion from institutional investors, while retail investors contributed a net inflow of 1.647 billion [2][3] - Notable net inflows from retail investors were observed in companies like Cambridge Technology and Guanghetong, while significant outflows were noted in Meilixin and Taicheng Light [3] Individual Stock Capital Flow - ZTE Corporation (000063) had a net inflow of 787 million from institutional investors, while retail investors saw a net outflow of 337 million [3] - Taicheng Light (300570) had a net inflow of 319 million from institutional investors, with retail investors experiencing a net outflow of 174 million [3] - Cambridge Technology (603083) recorded a net inflow of 238 million from institutional investors and a net inflow of 159 million from retail investors [3]

每经AI快讯，中光防雷（SZ 300414，收盘价：12.44元）11月26日晚间发布公告称，公司今日收到王雪 颖女士、汪建华先生出具的《股票减持时间届满告知函》，告知原减持计划时间已届满以及减持计划期 间的减持股份情况。在本次减持期间内，王雪颖、汪建华共减持公司股份约279万股，减持股份占公司 总股份为0.8545%。本次减持计划期限届满。 截至发稿，中光防雷市值为41亿元。 每经头条（nbdtoutiao）——国开行辟谣的"人民资产"是什么？记者实探：号称投资600元80天赚8万 元！一位投资人的女儿：劝不住她，警察都拦不住 （记者 胡玲） ...

证券代码：300414 证券简称：中光防雷 公告编号：临-2025-025 公司今日收到王雪颖女士、汪建华先生出具的《股票减持时间届满告知函》， 告知原减持计划时间已届满以及减持计划期间的减持股份情况。根据有关规定， 现将股东王雪颖女士、汪建华先生减持计划实施情况公告如下： 一、减持计划实施情况 在本次减持期间内，王雪颖女士共减持 2,764,500 股，占公司总股本的 0.8480%；汪建华先生共减持 21,100 股，占公司总股本的 0.0065%。本次减持计 划时间已届满，减持情况见下表： | 减持股东 | 减持方式 | 减持时间区间 | 减持均价 | 减持股数 | 减持比例 | | --- | --- | --- | --- | --- | --- | | | | | （元/股） | （股） | （%） | | 王雪颖 | 集中竞价 | 2025/08/26-2025/10/17 | 13.64 | 2,764,500 | 0.8480 | | 汪建华 | 集中竞价 | 2025/08/26 | 14.24 | 21,100 | 0.0065 | 注：表格中数据系四舍五入计算得出。股份来源系首次公开发 ...

Core Viewpoint - The company, Zhongguang Fanglai (300414), stated that it will disclose the specific number of shareholders at the end of each quarter in its regular reports, while the number of shareholders at other specific points in time is information that only the company's shareholders have the right to access [1] Group 1 - The company will provide quarterly shareholder numbers in regular reports [1] - Other specific time points for shareholder numbers are restricted to company shareholders [1]

数据显示，广发基金旗下1只基金位居中光防雷十大流通股东。广发量化多因子混合A（005225）三季 度新进十大流通股东，持有股数88.46万股，占流通股的比例为0.28%。根据测算，今日浮亏损失约57.5 万元。 广发量化多因子混合A（005225）成立日期2018年3月21日，最新规模36.18亿。今年以来收益46.17%， 同类排名840/8134；近一年收益48.64%，同类排名755/8056；成立以来收益124.34%。 广发量化多因子混合A（005225）基金经理为易威、李育鑫。 11月26日，中光防雷跌5.01%，截至发稿，报12.33元/股，成交2.17亿元，换手率5.54%，总市值40.20亿 元。 资料显示，四川中光防雷科技股份有限公司位于四川省成都高新区西部园区天宇路19号，成立日期2004 年2月18日，上市日期2015年5月13日，公司主营业务涉及防雷产品的研发、生产和销售,防雷工程的设 计和安装,提供防雷产品和防雷工程一体化的整体解决方案。铁路行业防雷领域的业务。主营业务收入 构成为：防雷系列产品68.02%，非防雷产品27.30%，防雷工程及服务4.68%。 从中光防雷十大流通股东 ...

Core Viewpoint - Zhongguang Lightning Protection has seen a stock price increase of 5.04%, reaching 13.13 yuan per share, with a trading volume of 339 million yuan and a turnover rate of 8.45%, resulting in a total market capitalization of 4.281 billion yuan [1] Company Overview - Sichuan Zhongguang Lightning Protection Technology Co., Ltd. was established on February 18, 2004, and listed on May 13, 2015. The company specializes in the research, production, and sales of lightning protection products, as well as the design and installation of lightning protection engineering, providing integrated solutions for lightning protection products and services [1] - The revenue composition of the company includes 68.02% from lightning protection products, 27.30% from non-lightning protection products, and 4.68% from lightning protection engineering and services [1] Shareholder Information - Huatai-PB Fund's Huatai-PB CSI 2000 Index Enhanced A (019923) has entered the top ten circulating shareholders of Zhongguang Lightning Protection, holding 881,800 shares, which accounts for 0.28% of the circulating shares. The estimated floating profit for today is approximately 555,500 yuan [2][4] - The fund was established on January 12, 2024, with a latest scale of 312 million yuan. Year-to-date returns are 40.9%, ranking 499 out of 4209 in its category, while the one-year return is 42.57%, ranking 299 out of 3982. Since inception, the fund has achieved a return of 64.47% [2] Fund Management - The fund managers of Huatai-PB CSI 2000 Index Enhanced A include Sheng Hao, Lei Wenyuan, and Kong Lingye. Sheng Hao has a tenure of 10 years and 46 days, managing assets totaling 4.417 billion yuan, with the best fund return during his tenure being 119.7% and the worst being -29.48% [3] - Lei Wenyuan and Kong Lingye both have a tenure of 3 years and 113 days, managing assets of 2.345 billion yuan and 2.334 billion yuan respectively, with both achieving a best return of 64.47% and a worst return of 0% during their tenure [3]