证券代码：300842 证券简称：帝科股份 公告编号：2026-013 无锡帝科电子材料股份有限公司 关于为子公司提供担保的进展公告 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、 担保情况概述 无锡帝科电子材料股份有限公司（以下简称"公司"）于 2025 年 10 月 28 日召开的第三届董事会第十四次会议、第三届监事会第十六次会议以及于 2025 年 11 月 13 日召开的 2025 年第二次临时股东大会，分别审议通过了《关于为子 公司提供担保额度预计的议案》，同意公司为公司合并报表范围内的子公司提供 担保，预计担保额度不超过人民币 16 亿元。担保额度有效期自本次股东大会审 议通过之日起 12 个月内，该额度在授权期限内可循环使用。在此额度范围内， 公司将不再就每笔担保事宜另行提交董事会、股东大会审议。在相应权限范围内， 公司董事会授权/提请股东大会授权董事长代表公司签署有关的法律文件，授权 经营管理层具体办理相关事宜。在不超过已审批担保总额度的情况下，公司管理 层可根据实际经营情况在总担保额度范围内适度调整各子公司（含授权期限内新 设立或纳入合 ...

Summary of Conference Call Records Company and Industry Overview 1. DiKe Co., Ltd. (帝科股份) - **Industry Position**: DiKe Co., Ltd. is recognized for its strong R&D capabilities, particularly in high-temperature paste materials for TOPCon technology, maintaining a leading position in the market [1] - **Market Share**: The company has improved its market share in low-temperature paste from third to first place, being the first to introduce the silver-coated solution [1] - **High Copper Paste**: The adoption of high copper paste is expected to increase, with significant advantages in high-temperature processes. The company and its partner, SOT, have a leading share in domestic battery cell production using high copper paste solutions [1] - **Profit Projections**: Estimated penetration rates for high copper paste are projected to be 8% in 2026 and 50% in 2027. The company anticipates a profit of 1 billion yuan in 2025, with a potential profit of 1 to 1.5 billion yuan from the paste segment in 2027 [1] - **Overseas Expansion**: The company has established partnerships in South Korea and Taiwan, achieving nearly 100% market share in North America for high/low-temperature paste. Future prospects in North America and space photovoltaic business are seen as certain and scarce [1] 2. Yongzhen Co., Ltd. (永臻股份) - **Market Leadership**: Yongzhen is a leading company in the frame sector, with significant overseas production capacity, including 180,000 tons in Vietnam and 40,000 tons in the U.S. [2] - **Profitability**: The Vietnam facility primarily supplies clients in India and the U.S., with unit profits exceeding 3,000 yuan per ton. The company is considering small capacity acquisitions and technological upgrades in Vietnam [2] - **U.S. Operations**: The company holds a 24.9% stake in AF SOLARTECH, a U.S. frame enterprise, which is expected to contribute approximately 300 million yuan annually due to high processing fees resulting from tariffs on aluminum products [2] - **Profit Outlook**: Current overseas capacity is projected to support stable profits of 500-600 million yuan. The company is expected to significantly reduce losses domestically, with potential total profits of 1 to 1.5 billion yuan in North America [2] 3. Juhe Materials (聚和材料) - **Market Trends**: Juhe Materials is expected to benefit significantly from the widespread adoption of high copper paste. The company’s semiconductor material assets are considered scarce and crucial for addressing domestic supply chain issues [2] 4. Yamaton (亚玛顿) - **Supplier Role**: Yamaton is currently a primary supplier for T clients, with a new base in the Middle East expected to yield significant returns in the future [2] Industry Insights 1. Overseas Energy Storage - **Market Demand**: The demand for energy storage solutions is long-term and urgent, with a focus on companies like Airo Energy, Sunshine Power, and others [3] 2. Electrical Equipment - **Market Focus**: The electrical systems in Europe and the U.S. are in a supercycle, with recommendations to focus on overseas markets, highlighting companies such as Siyuan Electric and others [3] 3. AI Power - **Investment Timing**: 2026 is anticipated to be a year of realization for AI power investments, with recommendations for companies like GemiTech and others [3]

Summary of Conference Call Notes Industry Overview - The focus is on the application of **tandem solar cells** in **space photovoltaic** systems, highlighting the challenges and advancements in technology related to lightweight and flexible solar panels [1][2]. Key Points and Arguments 1. **Challenges with Thin Silicon Cells**: - Space photovoltaic cells require extreme weight reduction and flexibility, making ultra-thin silicon cells very fragile. The use of string welding can lead to mechanical stress and high-temperature welding issues, increasing the risk of silicon cell breakage and detachment under extreme temperature variations in space [1][2]. 2. **Advantages of Tandem Structure**: - The tandem structure allows for flexible connections of silicon cells, reducing the number of solder joints. This effectively disperses mechanical stress, minimizing the risks of hidden cracks and breakage [1][2]. 3. **Increased Effective Power Generation**: - The tandem structure can achieve zero spacing between solar cells, which enhances the effective power generation area for the same solar wing size [3]. 4. **Historical Context**: - The application of tandem structures in space photovoltaics is well-established, with the "Shijian-1" satellite launched in 1971 being an early example of a solar panel using a "comb-type" structure designed in China [4]. 5. **Industry Feedback**: - Leading North American renewable energy companies are currently using tandem solutions for ground photovoltaic modules. The production line for tandem components is reported to be more than twice the cost of conventional string welding lines, indicating significant market interest [4]. Company Highlights 1. **ST Jingji**: - The wholly-owned subsidiary, Shengcheng Photovoltaics, possesses competitive manufacturing technology for tandem components. It is noted for being the sole supplier of ground tandem production lines to a well-known North American company and has also supplied coating equipment to overseas space perovskite enterprises. The company holds a significant market share in North America, estimated to exceed 50% [4]. 2. **Dike Co., Ltd.**: - A leading company in photovoltaic silver paste, known for its R&D capabilities. It has nearly 100% market share in North America and has been promoting tandem adhesive products since 2019, leveraging its core patent advantages in conductive paste solutions [5]. 3. **Debang Technology**: - A core supplier of tandem conductive adhesives, with products widely used in leading photovoltaic companies such as Tongwei, Canadian Solar, and major North American renewable energy firms, holding a strong competitive position in the market [5]. 4. **Juhe Materials**: - A leading company in photovoltaic silver paste, developing copper paste products suitable for photovoltaic cells, currently undergoing testing with major clients and expected to benefit from the adoption of high/pure copper paste materials [5]. 5. **Aotewei**: - A leading company in photovoltaic component equipment, with key products including string welding machines and silicon wafer sorting machines. The company has also made advancements in tandem equipment, achieving high precision and yield rates [6]. Additional Important Insights - The integration of semiconductor material assets by companies is seen as a solution to domestic supply chain issues, addressing critical bottlenecks in the industry [5][6].

Investment Rating - The report maintains a strong recommendation for companies such as 帝科股份 (Dike Co., Ltd.) and 聚和材料 (Juhua Materials) [3][4] - ST 京机 (ST Jingji) and 德邦科技 (Debang Technology) are not rated [3] Core Insights - The report highlights the potential application of the tile structure in space photovoltaic systems, which can reduce the risk of damage to solar cells and improve power output per unit area [1][7] - The use of tile structures is expected to create new demand scenarios for conductive adhesives and related equipment, benefiting companies involved in these technologies [1][7] Industry Overview - The industry consists of 308 listed companies with a total market capitalization of 792.4 billion and a circulating market value of 693.8 billion [4] - The industry has shown strong performance with absolute returns of 63.1% over 12 months [6] Key Companies - **ST 京机 (ST Jingji)**: A leader in automated manufacturing technology for photovoltaic modules, with a significant market share and established partnerships in tile technology [8] - **帝科股份 (Dike Co., Ltd.)**: A leading company in photovoltaic silver paste, with a strong market position and potential for growth in space photovoltaic applications [9] - **德邦科技 (Debang Technology)**: A core supplier of conductive adhesives for tile photovoltaic cells, with a strong competitive advantage [10] - **聚和材料 (Juhua Materials)**: A leading company in photovoltaic silver paste, developing copper paste products and addressing domestic supply chain issues [11] - **奥特维 (Aotewi)**: A prominent manufacturer of photovoltaic equipment, with deep reserves in tile technology and a comprehensive solution for vacuum process equipment [12]

Group 1 - The core viewpoint of the article is that the company, DiKe Co., Ltd. (300842), plans to significantly increase its investment and layout in the storage sector by 2025, aiming to enhance its competitive edge through the acquisition of Jiangsu Jingkai, which will enable an integrated industrial layout for storage business [1] - The DRAM market is experiencing continuous improvement, with the company's storage chip business projected to achieve approximately 500 million yuan in operating revenue by 2025, indicating a substantial year-on-year growth in both revenue scale and profitability [1] - The company intends to further strengthen its development in the storage market and product research and development, seizing opportunities in a high-demand market [1]

Core Viewpoint - The company has successfully implemented a high copper paste solution that has achieved large-scale production and shipment with strategic leading customers, significantly reducing metallization costs [1] Group 1: Product Development and Market Position - The high copper paste solution is recognized for its reliability, scalability, and affordability, gaining widespread acceptance among various industry clients [1] - The company anticipates achieving even larger-scale production with strategic customers this year [1] Group 2: Financial Projections and Growth Strategy - The storage chip business is projected to generate approximately 500 million yuan in revenue by 2025, with significant year-on-year growth in both revenue scale and profitability [1] - The company plans to continue increasing efforts in market development and product research in the storage sector to capitalize on high-demand market opportunities [1]

Group 1 - The core viewpoint of the article is that the company, 帝科股份, is considering expanding its testing capacity in response to market demand for storage business [1] Group 2 - The company has indicated that it will make decisions regarding capacity expansion based on market conditions and operational needs [1]

Group 1 - The total margin financing balance in A-shares reached 26,644.00 billion yuan, an increase of 740 million yuan from the previous trading day, accounting for 2.56% of the A-share circulating market value [1] - The margin trading volume on that day was 2,166.77 billion yuan, which is an increase of 255.11 billion yuan from the previous trading day, representing 9.53% of the total A-share trading volume [1] Group 2 - Among the 31 primary industries in Shenwan, 12 industries experienced net financing inflows, with the electronics industry leading at a net inflow of 2.304 billion yuan [2] - Other industries with significant net financing inflows include power equipment, computers, media, and basic chemicals [2] Group 3 - A total of 34 individual stocks had net financing inflows exceeding 100 million yuan, with Zhaoyi Innovation leading at a net inflow of 423 million yuan [2] - Other notable stocks with high net financing inflows include Cambrian, Sunshine Power, Xunwei Communication, Zhongwen Online, Dike Co., Huhua Electric, Changfei Fiber, Kingsoft Office, and TCL Zhonghuan [2][3]

Core Viewpoint - The articles highlight the growing interest and investment in space photovoltaic technology among various companies in China, indicating a significant potential for growth in this sector by 2026 as commercialization accelerates. Group 1: Company Overview - Xizi Clean Energy (002534) is a leading clean energy equipment manufacturer in China, focusing on high-performance perovskite photovoltaic technology and aiming to become a core supplier of materials for space photovoltaics by 2026 [1][24]. - Shanghai Port Construction (605598) is a major infrastructure company that is expanding into space photovoltaic systems, leveraging its engineering capabilities to support commercial space projects [2][25]. - TuoRi New Energy (002218) has a long-standing presence in the photovoltaic industry and is optimizing its space photovoltaic products, expecting to increase market share by 2026 [3][26]. - Mingyang Smart Energy (601615) is acquiring technology to enhance its capabilities in space solar cell development, aiming to integrate its wind and solar energy expertise [4][28]. - Woge Optoelectronics (603773) specializes in flexible solar wing materials for satellites, with a focus on high-temperature resistant films, anticipating significant growth in the space photovoltaic sector [5][29]. Group 2: Growth Outlook - Companies are expected to benefit from the rapid commercialization of space photovoltaics, with projections indicating substantial growth opportunities by 2026 [1][2][3][4][5]. - The synergy between commercial aerospace and space photovoltaic industries is anticipated to drive rapid business growth for companies like Shanghai Port Construction and Mingyang Smart Energy [2][4]. - The demand for flexible solar wings and high-efficiency photovoltaic materials is expected to surge, positioning companies like Woge Optoelectronics and TuoRi New Energy as key players in the market [3][5]. Group 3: Technological Advancements - Companies are focusing on developing materials that can withstand extreme space conditions, such as high-performance perovskite and flexible solar films, which are crucial for the success of space photovoltaic applications [1][5][6]. - The integration of advanced technologies, such as N-type solar cells and high-efficiency components, is being prioritized by firms like Junda Co. (002865) and Sanan Optoelectronics (600703) to enhance their competitive edge in the space photovoltaic market [6][10][35]. - The ongoing research and development efforts in high-efficiency solar technologies are expected to yield breakthroughs that will facilitate the commercialization of space photovoltaic solutions by 2026 [3][4][5][6].

Group 1 - The perovskite battery sector is experiencing significant growth, with multiple companies seeing stock price increases [1] - Companies such as Hangxiao Steel Structure, Jinjing Technology, Xizi Clean Energy, Shanghai Port Bay, and Tuori New Energy have reached their daily price limits [1] - Other notable companies with substantial stock price gains include Baoxin Technology, Maiwei Co., Mingyang Smart Energy, Dier Laser, and Dike Co. [1]