证券代码：002491 证券简称：通鼎互联 公告编号：2026-011 通鼎互联信息股份有限公司 关于控股股东股份解除质押及质押的公告 本公司及董事会全体成员保证信息披露的内容真实、准确、完整，没有虚 假记载、误导性陈述或重大遗漏。 特别风险提示： 公司控股股东及其一致行动人质押股份数量占其所持公司股份数量比例超 过 80%，请投资者注意相关风险。 一、股东股份解除质押及质押基本情况 通鼎互联信息股份有限公司（以下简称"公司"）于近日接到控股股东通鼎 集团有限公司（以下简称"通鼎集团"）有关办理部分股份解除质押及质押的通 知。本次质押与解除质押的股票数量一致，质押比例较前次披露未发生变化，现 将具体情况公告如下： 1、本次股份解除质押基本情况 | 股东名称 | 是否为控股股 东或第一大股 东及其一致行 | | 本次解除质押 股份数量（股） | 占其所持股 份比例 | 占公司总 股本比例 | 质押起始日 | 解除日期 | 质权人 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | | 动人 | | | | | | | | 通鼎集团 | | ...

Summary of Key Points from Conference Call Industry Overview - The strongest sector in the market is the oil and gas industry, with multiple companies showing significant performance [1] - Key players in the oil and gas sector include: - Water Development Oil and Gas (3 boards) - Intercontinental Oil and Gas (2 boards) - Zhun Oil Co. (2 boards) - Sinopec Oilfield Services (2 boards) - China National Petroleum Corporation (2 boards) [1][1][1] Sector Analysis - **Oil and Gas**: - Major companies include Tongyuan Petroleum, Intercontinental Oil and Gas, Water Development Gas, Zhongman Petroleum, Zhun Oil Co., Sinopec Oilfield Services, Beiken Energy, Blue Flame Holdings, and China National Petroleum [1] - **Shipping**: - Key players are COSCO Shipping Energy Transportation, China Merchants Jinling Shipyard, Ningbo Shipping, China Merchants Industry, and Nanjing Port [1] - **Photovoltaic Energy Storage**: - Notable companies include Airo Energy, Deyue Co., Shouhang New Energy, GCL-Poly Energy, Oujing Technology, Goodwe, and Guosheng Technology [1] - **Optical Communication**: - Companies mentioned include Huasheng Chang, Huilv Ecology, Tongding Interconnection, Jufei Optoelectronics, Robotech, Tengjing Technology, Huagong Technology, and Yuanjie Technology [2] - **Coal Chemical**: - Key players are Jinniu Chemical, Luohua Technology, Chitianhua, Baofeng Energy, China Coal Energy, and Lutianhua [2] - **Gold**: - Companies include Xiaocheng Technology, Western Gold, and Mankalon [2] - **Agriculture**: - Notable companies are Yasheng Group, Qiule Seed Industry, Kangnong Seed Industry, Shennong Seed Industry, and Quanyin High-Tech [2] - **Electric Power**: - Specific companies were not detailed in the provided content [2] Additional Insights - The market shows a diverse range of sectors with significant activity, particularly in oil and gas, which is currently the strongest sector [1] - The presence of multiple companies across various sectors indicates a robust market environment with potential investment opportunities [1][2]

通鼎互联信息股份有限公司（以下简称"公司"）股票（证券简称：通鼎互 联，证券代码：002491）于2026年2月27日、2026年3月2日、2026年3月3日连续 三个交易日收盘价格涨幅偏离值累计超过20%。根据《深圳证券交易所交易规则》 等相关规定，以上情形属于股票交易异常波动的情形。 证券代码：002491 证券简称：通鼎互联 公告编号：2026-010 通鼎互联信息股份有限公司 股票交易异常波动公告 本公司及董事会全体成员保证信息披露的内容真实、准确、完整，没有虚 假记载、误导性陈述或重大遗漏。 一、股票交易异常波动的情况介绍 二、公司关注并核实相关情况 针对公司股票交易的异常波动，公司董事会对公司、控股股东和实际控制人 就相关事项进行了核实，现就有关情况说明如下： 1、公司前期披露的信息不存在需要更正、补充之处； 本公司目前不从事CPO相关业务，敬请广大投资者注意投资风险； 2、公司未发现近期公共传媒报道了可能或已经对本公司股票交易价格产生 较大影响的未公开重大信息； 3、公司目前经营情况正常，内外部经营环境未发生重大变化。 风险提示：公司注意到近期市场对用于数据中心的光纤产品需求的增长关注 度较高， ...

Core Viewpoint - The rapid development of AI is driving an increased demand for upstream raw materials, leading to a rise in prices for these materials, particularly in the optical fiber market, which has reached a seven-year high with prices exceeding 40 yuan per core kilometer, reflecting an annual increase of over 80% [3][6]. Demand Side - The growth in AI computing power is significantly increasing the demand for high-speed connections within data centers and in non-traditional communication fields, leading to a surge in demand for new types of optical fibers such as multi-mode fibers and G.654.E fibers [6]. - Major tech companies like Microsoft are planning to deploy extensive lengths of hollow-core fiber for their AI data centers, indicating a strong market demand [6]. - The "East Data West Computing" national project in China is expected to generate a concentrated procurement demand for over 3 million core kilometers of ultra-low loss optical fibers by 2025 [6]. Supply Side - The production capacity of optical fibers is constrained by the availability of optical fiber preform rods, which are critical raw materials and represent a bottleneck in the supply chain [7]. - The expansion cycle for optical fiber preform rods is approximately two years, and the industry has seen cautious capital investment since 2019, resulting in a mismatch between supply and demand [7]. - The introduction of hollow-core fibers, which offer advantages such as low latency and low loss, is expected to change the market dynamics, although their high cost remains a barrier [7]. Market Concentration - Domestic manufacturers hold 80% of the global optical fiber preform capacity, enhancing their market power and limiting the expansion of traditional and hollow-core fiber production [8]. - The global optical fiber market is highly concentrated, with the top four manufacturers accounting for over 50% of the market share, and the top ten companies exceeding 90% [8]. Company Highlights - **Changfei Fiber**: A leading global company in the optical fiber industry, expected to reach a production capacity of 100 million core kilometers per year by 2025, benefiting from price increases [12]. - **Hengtong Optic-Electric**: Among the top three in optical fiber communication and submarine cables, with a projected capacity of 95 million core kilometers per year by 2025 [15]. - **ZTT**: A major player with a comprehensive product range and a projected capacity of 90 million core kilometers per year by 2025 [17]. - **FiberHome**: Unique in integrating optical communication systems, with a projected capacity of 85 million core kilometers per year by 2025 [19]. - **Tongding Interconnection**: Established a complete industry chain, with a projected capacity of 75 million core kilometers per year by 2025 [21]. - **Yongding Co., Ltd.**: Recognized as a national champion in fire-resistant communication cables, with a projected capacity of 70 million core kilometers per year by 2025 [23]. - **TeFa Information**: Focused on high-end optical communication products, with a projected capacity of 65 million core kilometers per year by 2025 [25].

Group 1 - The optical fiber and cable sector experienced a significant surge, with companies such as Farsens, Zhongtian Technology, Hengtong Optic-Electric, Hangzhou Electric, and Tongding Interconnection reaching their daily price limit [1] - Other notable stocks in the sector, including Tongguang Cable, Fenghuo Communication, Changfei Fiber, and Yongding Co., also showed substantial gains [1]

Core Viewpoint - The A-share market saw a significant rally in communication equipment stocks, with multiple companies reaching their daily price limits and substantial year-to-date gains reported [1][2]. Group 1: Stock Performance - Zhongtian Technology (600522) increased by 10.01%, with a market capitalization of 94.2 billion and a year-to-date gain of 52.26% [2] - Hengtong Optic-Electric (600487) rose by 10.00%, with a market cap of 109.4 billion and a year-to-date increase of 79.26% [2] - Tongding Interconnection (002491) saw a rise of 9.97%, with a market cap of 12.9 billion and a year-to-date gain of 74.67% [2] - Fenghuo Communication (600498) increased by 7.28%, with a market cap of 62.1 billion and a year-to-date gain of 42.46% [2] - Tianfu Communication (300394) rose by 6.91%, with a market cap of 283.9 billion and a year-to-date increase of 79.84% [2] - Ruijie Networks (301165) increased by 6.58%, with a market cap of 71.4 billion and a year-to-date gain of 1.05% [2] - Dingtong Technology (688668) rose by 6.36%, with a market cap of 21.7 billion and a year-to-date increase of 25.65% [2] - Yongding Co., Ltd. (600105) increased by 5.98%, with a market cap of 43.5 billion and a year-to-date gain of 18.65% [2] - Xinke Mobile (688387) rose by 5.70%, with a market cap of 55.2 billion and a year-to-date increase of 25.12% [2] - StarNet Ruijie (002396) increased by 5.30%, with a market cap of 18 billion and a year-to-date gain of 1.65% [2] - Feiling Kesi (301191) rose by 5.20%, with a market cap of 8.863 billion and a year-to-date increase of 18.88% [2] - Huiyuan Communication (000586) increased by 5.10%, with a market cap of 3.07 billion and a year-to-date gain of 17.29% [2] - ST Jinglun (600355) rose by 4.84%, with a market cap of 640 million and a year-to-date decrease of 41.96% [2] - Dayi Co., Ltd. (300504) increased by 4.75%, with a market cap of 4.304 billion and a year-to-date gain of 6.65% [2] - Hengwei Technology (603496) rose by 4.75%, with a market cap of 10.1 billion and a year-to-date increase of 15.69% [2] - Changfei Optical Fiber (601869) increased by 4.53%, with a market cap of 197.8 billion and a year-to-date gain of 105.31% [2] - Zhongguang Lightning Protection (300414) rose by 4.47%, with a market cap of 5.405 billion and a year-to-date increase of 10.90% [2]

Group 1 - The A-share market saw a collective surge in communication equipment stocks, with notable gains from companies such as Zhongtian Technology, Hengtong Optic-Electric, and Tongding Interconnection reaching the daily limit [1] - Zhongtian Technology's stock increased by 10.01%, with a total market capitalization of 94.2 billion and a year-to-date increase of 52.26% [2] - Hengtong Optic-Electric also rose by 10.00%, boasting a market cap of 109.4 billion and a year-to-date increase of 79.26% [2] Group 2 - Tongding Interconnection's stock price increased by 9.97%, with a market capitalization of 12.9 billion and a year-to-date increase of 74.67% [2] - Fenghuo Communication's stock rose by 7.28%, with a market cap of 62.1 billion and a year-to-date increase of 42.46% [2] - Tianfu Communication and Ruijie Networks saw increases of 6.91% and 6.58%, respectively, with market caps of 283.9 billion and 71.4 billion [2] Group 3 - Other companies such as Yonding Co., Xinke Mobile, and Xingwang Ruijie also experienced gains of over 5%, indicating a strong performance across the sector [1] - The overall positive trend in these stocks is supported by the formation of a MACD golden cross signal, suggesting a favorable market condition for these companies [1]

Core Viewpoint - The optical fiber and cable sector is experiencing significant strength, with multiple companies reaching their daily price limits and showing notable gains [1] Group 1: Market Performance - The optical fiber and cable sector has shown strong performance as of 09:45 on February 26, with companies such as Farsens, Zhongtian Technology, Hangzhou Electric, and Tongding Interconnection hitting their daily price limits [1] - Key stocks like Hengtong Optic-Electric, Huiyuan Communication, and Changfei Optics have also reported substantial gains [1]

Core Viewpoint - The optical fiber and cable sector is experiencing a strong performance, with multiple companies reaching their daily price limits [1] Group 1: Market Performance - The optical fiber and cable sector is showing significant strength, with companies such as Hanlan Co., Tongding Interconnection, Huamai Technology, Changfei Optical Fiber, Hengtong Optic-Electric, and Farsens hitting the daily limit [1] - Other notable stocks with substantial gains include Tongguang Cable, Far East Holdings, Hangzhou Electric, and Guangku Technology [1]

Core Viewpoint - China Mobile has announced the candidates for its centralized procurement project for special optical cables for 2026-2027, with Tongding Interconnection winning the highest bid share of 18.85% at a pre-tax bid price of 238 million yuan [1] Group 1: Procurement Details - The total procurement volume for the special optical cables is approximately 79,400 kilometers, equivalent to 3.131 million core kilometers [1] - The procurement includes five major categories of products: ordinary optical cables, flat optical cables, blown micro cables, optical-electrical composite cables, and self-supporting optical cables, along with various sub-products such as waterline cables, rodent-proof cables, and flame-retardant buried cables [1] Group 2: Company Performance - Tongding Interconnection has been recognized for its product stability, price competitiveness, and large-scale delivery capability, leading to its top bid share among eight candidates [1] - The company has established three production bases in Jiangsu, Anhui, and Sichuan, creating a full industry chain layout that covers everything from preform rods to optical fibers, optical cables, communication cables, power cables, and communication equipment [1] - This vertical integration from raw materials to end products provides a solid foundation for the efficient fulfillment of procurement orders [1]