Group 1 - The company, Taiyong Changzheng, has stated that it has not won the bid for the power grid charging pile renovation project, and the information circulating is inaccurate [2]

Core Viewpoint - Taiyong Changzheng has acquired a 20% stake in Shenzhen Aerospace Tai Rui Jie Electronics Co., Ltd. from Beijing Huashang Weiye Asset Management Co., Ltd. in 2020, indicating a strategic investment in the energy efficiency sector [2] Company Overview - Shenzhen Aerospace Tai Rui Jie Electronics Co., Ltd. is primarily engaged in research, production, sales, and services, focusing on smart electric meters, power information collection, distribution network automation products, and smart energy management systems [2] - The company’s offerings include energy efficiency solutions that encompass smart, energy-saving, and renewable energy technologies [2]

Core Viewpoint - The company, Taiyong Changzheng (002927.SZ), announced that it currently does not have a low-voltage electrical academician workstation, but it has been approved to establish a national-level postdoctoral research workstation in 2024 [1] Group 1 - The company has confirmed the absence of a low-voltage electrical academician workstation [1] - The company received approval for the establishment of a national-level postdoctoral research workstation in 2024 [1]

Investment Rating - The report provides a neutral investment rating for the industry [59]. Core Insights - Solid State Circuit Breakers (SSCB) represent a significant technological advancement in circuit protection, transitioning from traditional electromechanical structures to power electronic devices, which better meet the demands of DC systems for high-speed, frequent operations, and compact designs [4][21]. - The necessity for SSCBs in AI Data Centers (AIDC) is emphasized, as they are critical components in the 800V DC ecosystem, enhancing the system's capacity to handle high power density loads and ensuring safety and rapid fault protection [5][30]. - The report identifies key players in the SSCB market, including companies like ABB, Eaton, and domestic firms such as Liangxin, Chint, and Taiyong Changzheng, highlighting their innovations and contributions to the industry [32][36][39][41][43]. Summary by Sections 1. What is a Solid State Circuit Breaker? - SSCBs utilize power semiconductor devices like IGBT, MOSFET, and SiC MOSFET to achieve current interruption, addressing challenges faced by traditional mechanical circuit breakers in DC systems [4][21]. - The advantages of SSCBs include extremely fast interruption speeds, no arcing or contact wear, excellent adaptability to DC systems, and high electrical longevity and reliability [16][21]. 2. Why AIDC Needs Solid State Circuit Breakers? - The evolution of data center power supply architecture is moving towards DC systems, which reduce energy conversion losses and improve efficiency [24][26]. - The report outlines the transition from traditional AC systems to a centralized DC supply model, which enhances power density and reliability [26][30]. 3. Related Companies - **ABB**: A leading provider of electrical solutions, ABB's SACE Infinitus solid state circuit breaker offers rapid fault interruption and significant power loss reduction [36]. - **Eaton**: Known for its power management solutions, Eaton's Polaris solid state circuit breaker features fast fault interruption and is designed for data centers and renewable energy applications [39]. - **Liangxin**: A domestic leader in low-voltage electrical products, Liangxin is focusing on smart distribution and has developed solid state circuit breakers for high power density applications [41]. - **Chint**: A major player in the low-voltage electrical industry, Chint is expanding its product line to include solid state circuit breakers to meet the growing demand in renewable energy and data centers [43]. - **Taiyong Changzheng**: This company has been an early adopter of SSCB technology, offering products that enhance the reliability and safety of DC power systems [49].

Core Viewpoint - Taiyong Changzheng announced that the company and its controlling subsidiaries have not engaged in any illegal guarantees or overdue guarantees, and there are no guarantees involved in lawsuits, nor has the company incurred losses due to being ruled against in guarantee-related cases [2] Summary by Categories - **Company Compliance** - The company confirmed that it has not violated any regulations regarding guarantees [2] - There are no overdue guarantees reported by the company or its subsidiaries [2] - **Legal Standing** - The company stated that it is not involved in any lawsuits related to guarantees [2] - There have been no losses incurred from guarantees due to adverse legal judgments [2]

Group 1 - The board of Guizhou Taiyong Changzheng Technology Co., Ltd. received a resignation report from director Li Peilin due to personal reasons, and he will continue to hold other positions within the company and its subsidiaries after resigning from the board [1] Group 2 - Haili Biological's acquisition target has seen its valuation drop by 50% over the past eight months, despite a ninefold increase in value during the acquisition process [1] - The largest customer of Haili Biological is a company that has not yet been established, raising questions about the legitimacy of the business dealings [1]

证券代码：002927 证券简称：泰永长征 公告编号：2026-002 李培林先生在担任公司董事期间勤勉尽责，公司董事会对李培林先生任职期 间为公司发展所作的贡献表示衷心的感谢。 特此公告。 贵州泰永长征技术股份有限公司 董 事 会 贵州泰永长征技术股份有限公司 2026 年 1 月 15 日 关于董事辞职的公告 本公司及董事会全体成员保证信息披露内容的真实、准确和完整，没有虚假 记载、误导性陈述或重大遗漏。 贵州泰永长征技术股份有限公司（以下简称"公司"）董事会于 2026 年 1 月 13 日收到公司董事李培林先生的辞职报告，因个人原因，董事李培林先生申请辞 去公司第四届董事会董事职务，辞职后，将继续在公司及子公司担任其他职务。 根据有关法律法规及《公司章程》的规定，李培林先生的辞职未导致公司董 事会成员低于法定最低人数，不会影响公司董事会正常运作，其辞职报告自送达 董事会之日起生效。公司将按照相关法律法规和《公司章程》的规定尽快完成董 事的补选工作。截至本公告披露日，李培林先生未持有公司股份。 1 ...

证券代码：002927 证券简称：泰永长征 公告编号：2026-001 贵州泰永长征技术股份有限公司 关于为子公司向银行申请授信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内容的真实、准确和完整，没有虚假 记载、误导性陈述或重大遗漏。 为支持贵州泰永长征技术股份有限公司（以下简称"公司"）子公司业务发 展，第四届董事会第四次会议、第四届监事会第四次会议、2024 年度股东大会审 议通过了《关于预计 2025 年度担保额度的议案》，同意公司向全资子公司深圳市 泰永电气科技有限公司提供新增不超过人民币 40,000 万元的担保额度、向全资子 公司重庆源通电器设备制造有限责任公司（以下简称"重庆源通"）提供新增不 超过人民币 3,000 万元的担保额度，有效期限自 2024 年度股东大会审议通过之日 起 12 个月内，具体担保形式后续将与有关机构进一步协商确定，以正式签署的协 议或合同为准。具体内容详见公司于 2025 年 4 月 25 日披露在巨潮资讯网 （www.cninfo.com.cn）上的《关于预计 2025 年度担保额度的公告》（公告编号： 2025-022）等相关公告。 一、担保情况概述 公 ...

Core Viewpoint - The company announced the resignation of director Li Peilin from its fourth board of directors due to personal reasons, while he will continue to hold other positions within the company and its subsidiaries [1] Group 1 - Li Peilin submitted his resignation report on January 13, 2026 [1] - After resigning, Li Peilin will not hold any shares in the company [1] - The resignation is attributed to personal reasons [1]

Summary of AIDC Conference Call Industry Overview - The conference call focuses on the AIDC (Artificial Intelligence Data Center) industry, particularly the transition towards 800 VDC (voltage direct current) systems and the adoption of solid-state circuit breakers (SSCB) [1][3][4]. Key Points and Arguments - **Transition to 800 VDC**: The domestic 800 VDC pilot projects are being implemented, marking a significant shift towards direct current and high voltage systems, which will drive the evolution of UPS (Uninterruptible Power Supply) to HVDC and SST (Solid-State Transformer) [1][3]. - **Solid-State Circuit Breakers (SSCB)**: The application of SSCBs in 800 V systems is accelerating, with companies like Eaton, ABB, and domestic firms such as Liangxin, Taiyong Changzheng, and Chint Electric actively investing in this technology [1][5]. - **Market Acceptance**: There is an increasing acceptance of direct current power supply solutions in the market. Companies like ByteDance are testing DC UPS and 800 V HVDC systems, indicating a growing willingness to adopt these technologies [1][6]. - **Investment Potential**: Companies such as Zhongheng Electric, Keda, and Oulutong are identified as having significant investment potential due to their strategic positions and partnerships with major players like Alibaba and ByteDance [1][7]. - **Impact of Overseas Markets**: The North American market shows a significant influence on high voltage direct current systems, with companies benefiting from the new cycle of internet infrastructure investment [1][8]. - **Future Demand for SSCBs**: The demand for SSCBs is expected to grow significantly, with projections indicating a market space of 2 billion yuan by 2027 if the penetration rate of 800 V HVDC reaches 20% [2][13]. Additional Important Insights - **Economic Benefits of SSCBs**: The adoption of SSCBs in data centers is expected to yield substantial economic benefits, including reduced maintenance costs and increased electrical lifespan [12][13]. - **Application Scenarios**: SSCBs are particularly suited for high-frequency operations and compact requirements in data centers, with applications in various scenarios such as multi-ecological access and high-voltage DC relay upgrades [14][15]. - **Market Forecast**: The global market for SSCBs is projected to reach 30 billion yuan by 2027, with a significant portion of this market driven by overseas demand due to higher penetration rates and pricing [13]. This summary encapsulates the key discussions and insights from the AIDC conference call, highlighting the industry's transition towards high voltage direct current systems and the growing role of solid-state circuit breakers.