关于回购股份集中竞价减持进展的公告 本公司及全体董事会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。 长缆科技集团股份有限公司（以下简称"公司"）于 2025 年 10 月 27 日召开 了第五届董事会第十四次会议，审议通过了《关于减持公司已回购股份的议案》， 根据公司于 2024 年 2 月 8 日披露的《回购股份报告书》之用途约定，同意公司 通过集中竞价交易方式减持已回购股份，实施期限为自发布减持公告之日起 15 个交易日后的 6 个月内，拟减持回购股份不超过 3,862,152 股（即不超过公司总 股本的 2%），减持价格根据减持时的二级市场价格确定。具体内容详见公司刊登 在巨潮资讯网上（www.cninfo.com.cn）的相关公告。 根据《深圳证券交易所上市公司自律监管指引第 9 号——回购股份》等相关 规定，上市公司采用集中竞价交易方式减持回购股份期间，应当在每个月的前三 个交易日内披露截至上月末的出售进展情况。现将有关情况公告如下： 证券代码：002879 证券简称：长缆科技 公告编号：2026-024 长缆科技集团股份有限公司 二、风险提示 本次减持公司已回购股 ...

年度 | 乡村振兴与社会贡献����������������������43 | 创新驱动���������������������������������������46 | | --- | --- | | 协作共赢���������������������������������������51 | 供应链管理������������������������������������53 | | 产品安全与质量�����������������������������59 | 员工权益���������������������������������������62 | 《深圳证券交易所上市公司自律监管指引第 《深圳证券交易所上市公司自律监管指南第 3 号 -- 可持续发展报告编制（2026 年修订）》 | 治理战略与组织架构����������������������73 | | --- | | 风险管理与内部控制����������������������79 | | 投资者保护������������������������������������86 | | 反商业贿赂及反贪污����������� ...

证券代码：002879 证券简称：长缆科技 公告编号：2026-023 长缆科技集团股份有限公司 第五届董事会第十八次会议决议公告 本公司及全体董事会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、董事会会议召开情况 1、长缆科技集团股份有限公司（以下简称"公司"）第五届董事会第十八次 会议于 2026 年 3 月 30 日在公司会议室以通讯方式召开，会议通知以专人送达、 电子邮件相结合的方式于 2026 年 3 月 26 日向各位董事发出。 2、本次会议应出席董事 11 名，实际出席董事 11 名。 二、董事会会议审议情况 （一）审议通过了《关于<2025 年度环境、社会与公司治理（ESG）报告> 的议案》 具体内容详见同日披露于巨潮资讯网（www.cninfo.com.cn）的《2025 年度 环境、社会与公司治理（ESG）报告》。 表决结果：有效表决票 11 票，同意票 11 票，反对票 0 票，弃权票 0 票。 三、备查文件 3、本次会议由董事长俞涛先生主持，公司部分高级管理人员列席了会议。 4、本次会议的召开符合《公司法》等有关法律、法规及《公司章程》的规 定。 ...

Group 1: Company Overview and Operations - Changlan Technology Group Co., Ltd. is a leading manufacturer of natural ester insulating oil, with its product successfully applied in 110kV transformers [2] - The company focuses on the development of insulation materials for emerging applications, including immersion liquid cooling [2] Group 2: Financial Performance and Market Position - The company aims to enhance its market value through technological innovation and improved internal management [2] - The financial budget for 2026 includes projected revenue and profit figures, which were not specified in the document [2] Group 3: Stock Market and Investor Relations - The company terminated its plan for a private placement of shares due to insufficient growth momentum and expansion expectations [3] - The current market capitalization is perceived as undervalued, influenced by various factors including macroeconomic conditions and market activity [3] - The company is committed to returning value to investors through strong operational performance [3] Group 4: Research and Development - The R&D expenditure for 2025 is reported to be 71,971,226.13, with specific details available in the annual report [3]

Group 1: Financial Performance - In 2025, the company achieved a revenue of 144,037.32 million yuan, representing a year-on-year growth of 15.97% [2] - The net profit attributable to shareholders was 13,376.44 million yuan, with a significant increase of 79.11% compared to the previous year [2] - The net profit after deducting non-recurring gains and losses reached 13,028.38 million yuan, marking an 88.32% year-on-year growth [2] - Earnings per share stood at 0.78 yuan, and as of December 31, 2025, total assets amounted to 270,630.61 million yuan, with total equity of 173,208.64 million yuan [2] Group 2: Product and Market Development - Double River Energy has established advantages in the natural ester insulating oil sector, which is characterized by high flash and fire points, natural biodegradability, and strong safety features [2] - The natural ester insulating oil has been successfully applied in significant projects, including the world's first 110kV natural ester transformer and a 180 MW offshore photovoltaic project by the Three Gorges Group [2] - The company is actively expanding into the commercial aerospace sector, introducing materials, cabinets, connectors, and electromechanical products into the aerospace industry [3] - A differentiated overseas market expansion strategy has been developed, focusing on high-end markets in Europe and the United States, while also targeting emerging markets for medium and low-voltage products [3] - Preparatory work for establishing overseas production bases is underway, with a focus on selecting capable partners and exploring diverse cooperation models [3]

Summary of Long Cable Technology Conference Call Company Overview - **Company**: Long Cable Technology - **Industry**: Cable and Transformer Oil Manufacturing Key Points Industry and Market Position - **220kV Cable Accessories**: The company maintains a leading market share of 30% in the State Grid's bidding for 220kV cable accessories, with expectations for 500kV high-end products to achieve sales of 50-60 million yuan by 2025, and a projected gross margin of 70%-80% in 2026 [2][3] - **Transformer Oil Business**: The target for transformer oil shipments in 2026 is set at 80,000 to 100,000 tons, with high-margin plant oil expected to account for 4,000 to 8,000 tons, indicating a trend towards substitution that will drive overall gross margin upward [2][10] - **Overseas Business**: The revenue target for overseas operations in 2026 is 100 million yuan, with direct export gross margins 20%-30% higher than domestic sales. Plans for capacity output negotiations in Europe and the US are set for April 2026, focusing on high-voltage and ultra-high-voltage markets [2][19] Financial Performance - **2025 Financials**: Revenue grew by 14% and profit increased by 78%, although excluding a stock incentive reversal of 95-100 million yuan, actual performance showed a declining trend. The gross margin for core products, particularly 220kV cable accessories, decreased due to delays in State Grid construction affecting delivery volumes [3][4] - **Cost Management**: The company plans to reduce overall expense ratios in 2026 through subsidiary cancellations and sales model reforms, with expectations for improved performance based on favorable industry fundamentals and contract situations [2][16] Product Line Insights - **Product Margin Trends**: The gross margin for 220kV products is under pressure due to rising costs of raw materials like copper and petrochemicals. The company aims to offset this by increasing sales of higher voltage products, particularly 500kV, which is expected to dominate the domestic market [6][22] - **Market Dynamics**: The company is positioned as a leader in the cable accessories sector, with a strong foothold in urban power grids and renewable energy markets. It is the only domestic brand in the offshore wind power market, competing directly with foreign brands [4][8] Strategic Initiatives - **Manufacturing and Operational Improvements**: The company is focusing on enhancing its manufacturing capabilities by phasing out outdated production, upgrading equipment, and adopting flexible pricing strategies to better meet customer demands [5][15] - **R&D in Emerging Fields**: The company is exploring new cooling liquid applications, with ongoing research in various chemical pathways, aiming to collaborate with downstream energy storage system integrators [15] Future Outlook - **2026 Projections**: The company anticipates a 30% growth in business from power generation groups, with a focus on direct participation in provincial bidding processes. The overall outlook for 2026 is positive, with expectations for continued growth in both domestic and international markets [8][9] Challenges and Risks - **Cost Pressures**: Rising copper prices and potential increases in petrochemical costs pose challenges to maintaining margins. The company is strategizing to mitigate these impacts through volume growth and cost control measures [22] - **Market Competition**: The competitive landscape is expected to intensify, necessitating innovation and market expansion to sustain profitability [6][21] Conclusion - **Overall Strategy**: Long Cable Technology is transitioning towards a more competitive and modern operational model, focusing on high-margin products and international expansion while addressing cost pressures and market dynamics [5][18]

Financial Performance - In 2025, the company achieved a revenue of 144,037.32 million CNY, representing a year-on-year growth of 15.97% [3] - The net profit attributable to shareholders was 13,376.44 million CNY, with a significant increase of 79.11% compared to the previous year [3] - The net profit after deducting non-recurring gains and losses reached 13,028.38 million CNY, marking an 88.32% year-on-year growth [3] - Earnings per share (EPS) stood at 0.78 CNY [3] - As of December 31, 2025, total assets amounted to 270,630.61 million CNY, with total equity of 173,208.64 million CNY [3] Investment Strategy - The company is focusing on high-performance, specialty insulation materials as the core of its investment strategy [3] - Plans include strategic layout in emerging applications such as immersion liquid cooling, leveraging expertise in insulation materials and transformer oil [3] - A professional team will be established to track industry developments and optimize R&D directions [3] International Market Expansion - The company has developed a differentiated overseas market expansion strategy, targeting high-end markets in Europe and the U.S. [3] - Emphasis on promoting high-voltage and ultra-high-voltage cable accessory products while expanding into emerging markets with medium and low-voltage products [3] - Preparations for establishing overseas production bases are underway, with a focus on selecting capable partners and exploring diverse cooperation models [3] Product Development - Successful pre-identification tests for 750kV cable accessories have been completed, positioning the company among the few globally to achieve this in urban grid equipment [3] - The successful delivery of 500kV AC/DC cable accessories in specific projects marks a significant technological advancement in offshore wind power applications [3] - These developments reinforce the company's leading position in ultra-high voltage cable accessory technology [4]

证券代码：002879 证券简称：长缆科技 公告编号：2026-019 长缆科技集团股份有限公司 关于终止 2025 年度向特定对象发行股票事项的公告 本公司及全体董事会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。 长缆科技集团股份有限公司（以下简称"公司"）于 2026 年 3 月 16 日召开了 第五届董事会第十七次会议，审议通过了《关于终止 2025 年度向特定对象发行 股票事项的议案》，同意公司终止 2025 年度向特定对象发行股票事项。现将具体 情况公告如下： 一、公司 2025 年度向特定对象发行股票事项的基本情况 2025 年 6 月 20 日，公司第五届董事会第十次会议审议通过《关于公司符合 向特定对象发行股票条件的议案》《关于公司 2025 年度向特定对象发行股票方案 的议案》《关于公司 2025 年度向特定对象发行股票预案的议案》《关于公司 2025 年度向特定对象发行股票方案的论证分析报告的议案》《关于公司 2025 年度向特 定对象发行股票募集资金使用的可行性分析报告的议案》等议案。 二、终止 2025 年度向特定对象发行股票事项的原因 自前述向特定对 ...

目 录 一、内部控制审计报告…………………………………………第 1—2 页 内部控制审计报告 天健审〔2026〕2-44 号 长缆科技集团股份有限公司全体股东： 按照《企业内部控制审计指引》及中国注册会计师执业准则的相关要求，我 们审计了长缆科技集团股份有限公司（以下简称长缆科技公司）2025 年 12 月 31 日的财务报告内部控制的有效性。 第 1 页 共 2 页 一、企业对内部控制的责任 按照《企业内部控制基本规范》《企业内部控制应用指引》以及《企业内部 控制评价指引》的规定，建立健全和有效实施内部控制，并评价其有效性是长缆 科技公司董事会的责任。 二、注册会计师的责任 我们的责任是在实施审计工作的基础上，对财务报告内部控制的有效性发表 审计意见，并对注意到的非财务报告内部控制的重大缺陷进行披露。 三、内部控制的固有局限性 内部控制具有固有局限性，存在不能防止和发现错报的可能性。此外，由于 情况的变化可能导致内部控制变得不恰当，或对控制政策和程序遵循的程度降低， 根据内部控制审计结果推测未来内部控制的有效性具有一定风险。 四、财务报告内部控制审计意见 我们认为，长缆科技公司于 2025 年 12 月 3 ...

一、募集资金基本情况 （一）实际募集资金金额、资金到账时间 经中国证券监督管理委员会《关于核准长缆电工科技股份有限公司首次公开 发行股票的批复》（证监许可[2017]759号文）核准，2017年6月1日，公司公开 发行人民币普通股（A股）3,500万股，发行价格为每股18.02元，募集资金总额 为人民币63,070.00万元，扣除发行费用5,802.21万元，本次募集资金净额为 57,267.79万元。 国投证券股份有限公司 关于长缆科技集团股份有限公司 2025年度募集资金存放、管理与使用情况的专项核查意见 根据《首次公开发行股票注册管理办法》《上市公司募集资金监管规则》《深 圳证券交易所上市公司自律监管指引第1号—主板上市公司规范运作（2025年修 订）》《深圳证券交易所上市公司自律监管指引第13号——保荐业务（2025年修 订）》等有关法律法规和规范性文件的有关规定，国投证券股份有限公司（以下 简称"保荐机构"或"国投证券"）对长缆科技集团股份有限公司（以下简称"长 缆科技"或"公司"）截至2025年12月31日的募集资金存放、管理与使用情况进 行了核查，具体情况如下： 以上募集资金已由天健会计师事务所 ...