Core Insights - Solid-State Transformers (SST) are leading innovations in power transmission and distribution, utilizing power electronics and high-frequency electromagnetic induction principles [1][2] - China has established a well-defined vertical industry chain for SST, with upstream focusing on wide bandgap semiconductors and soft magnetic materials, midstream on modular manufacturing, and downstream on applications in smart grids and data centers [1][6] - The SST industry is transitioning from technology validation to large-scale commercialization, driven by AI computing power and energy transition, despite facing technical bottlenecks [1][12] Industry Overview - SST, also known as Power Electronic Transformer (PET), replaces traditional transformer components with semiconductor devices to achieve voltage transformation and electrical isolation [2][3] - The main types of SST include AC-SST, DC-SST, and Hybrid-SST, each serving different applications from smart grids to data centers [4][5] Cost Structure - The cost structure of SST is heavily concentrated in upstream components, with power electronic devices accounting for approximately 40% of costs, followed by high-frequency transformers, structural cooling, and control systems each at about 15% [8][10] Market Dynamics - The demand for SST is rapidly diversifying, primarily driven by global energy transition and digital infrastructure development, with AI data centers being the largest application segment [11][12] - The Chinese silicon carbide (SiC) market is projected to grow from approximately 1.6 billion yuan in 2024 to 1.91 billion yuan in 2025, indicating strong growth potential [10] Development Status - The SST industry in China is at a critical stage of transitioning from technology validation to commercialization, with challenges including high costs and lack of standards [12][13] - Major companies like China Xidian and TBEA are leading the market, with significant shares in high-end applications [15] Future Trends - The industry is expected to see breakthroughs in material performance and technology, leading to cost reductions and performance improvements [16] - Application scenarios are anticipated to expand from data centers and smart grids to electric vehicle charging and industrial applications [17] - The competitive landscape will evolve, emphasizing technology, capital, and supply chain capabilities, with a focus on domestic material sourcing [18]

Market Performance - The Hainan Free Trade Zone concept index declined by 4.52%, ranking among the top losers in the concept sector as of the market close on November 19 [1] - Notable stocks within the Hainan Free Trade Zone that hit the daily limit down include Hainan Haiyao, Haima Automobile, and *ST Shuangcheng, while stocks like Xindazhou A, Junda Co., and Jinpan Technology saw slight increases of 1.96%, 0.77%, and 0.24% respectively [1] Capital Flow - The Hainan Free Trade Zone concept experienced a net outflow of 2.356 billion yuan from major funds today, with 26 stocks facing net outflows, and 10 stocks seeing outflows exceeding 100 million yuan [2] - The stock with the highest net outflow was Hainan Airport, which saw a net outflow of 294 million yuan, followed by Haima Automobile, Zhongtung High-tech, and Hainan Development with net outflows of 268 million yuan, 191 million yuan, and 185 million yuan respectively [2] Stock Performance - The top stocks with significant net outflows in the Hainan Free Trade Zone include: - Hainan Airport: -4.95% with a turnover rate of 3.02% and a net outflow of 293.96 million yuan - Haima Automobile: -10.00% with a turnover rate of 19.58% and a net outflow of 267.67 million yuan - Zhongtung High-tech: -3.47% with a turnover rate of 6.92% and a net outflow of 191.25 million yuan - Hainan Development: -8.81% with a turnover rate of 14.49% and a net outflow of 185.28 million yuan [2][3]

Group 1: AI Market Growth - The global AI market is experiencing rapid growth, with a projected market size of approximately $23.4 billion in 2024 and an expected increase to $274.5 billion by 2032, reflecting a CAGR of 36% [1] Group 2: Power Supply Challenges in the US - The current power capacity of data centers in the US is nearing its limit, with over 400 GW of power supply requests reaching 57% of the national peak load, but the actual implementation rate is only about 20% [4] - Microsoft CEO Nadella highlighted that a significant amount of AI chips (GPUs) are idle due to insufficient power and cooling capacity in data center rack space, rendering high-performance chips ineffective [4] Group 3: Investment in Power Distribution Systems - For a 5MW data center, the distribution system accounts for 55% of the construction cost, while the cooling system represents 19% [7] - The power supply system is evolving towards 800V/±400V high voltage direct current systems due to increased IT load power and limited physical space in data centers [9] Group 4: Company Performance - Siyi Electric - Siyi Electric, established in 1993, has become a leading private power equipment manufacturer in China, with a diverse product range and strong EPC capabilities [11] - In 2023, Siyi Electric achieved overseas revenue of 2.158 billion yuan, a year-on-year increase of 15.71%, with new overseas orders reaching 4.01 billion yuan, up 34% [14] - The company is expected to reach overseas revenue of 3.122 billion yuan in 2024, a growth of 44.67%, with overseas orders accounting for 20.2% of total revenue [14] Group 5: Company Performance - Jinpan Technology - Jinpan Technology's dry-type transformers are key products for the AI data center market, meeting the stringent power supply stability and efficiency requirements [23] - In the first three quarters of 2025, Jinpan Technology's revenue from AIDC and IDC sectors surged to 974 million yuan, a year-on-year increase of 337%, making it a significant part of the company's total revenue [23] - The company reported a revenue growth of 8.25% in the first three quarters of 2025, with net profit growth reaching 20.27%, indicating improved profitability [26]

Market Overview - The electric grid equipment sector experienced a decline of 2.26% on the previous trading day, with Zhongneng Electric leading the drop [1] - The Shanghai Composite Index closed at 3939.81, down 0.81%, while the Shenzhen Component Index closed at 13080.49, down 0.92% [1] Stock Performance - Notable gainers in the electric grid equipment sector included: - Rongxun Co., Ltd. (603829) with a closing price of 24.17, up 10.01% [1] - Hongxiang Co., Ltd. (300427) with a closing price of 9.21, up 5.98% [1] - Shuangjie Electric (300444) with a closing price of 11.28, up 4.93% [1] - Major decliners included: - Zhongneng Electric (300062) with a closing price of 9.52, down 14.77% [2] - Sun Cable (002300) with a closing price of 7.44, down 10.04% [2] - Moen Electric (002451) with a closing price of 12.93, down 10.02% [2] Capital Flow - The electric grid equipment sector saw a net outflow of 3.804 billion yuan from institutional investors, while retail investors contributed a net inflow of 3.433 billion yuan [2] - The table of capital flow indicates that major stocks like Luokai Co., Ltd. (603829) and Shuangjie Electric (300444) experienced varying levels of net inflow and outflow from different investor types [3]

Core Viewpoint - The high-voltage index experienced a decline of 2.01%, with most constituent stocks showing a downward trend [1] Group 1: Stock Performance - Jinpan Technology saw a significant drop of 7.68% [1] - Yongfu Co., Ltd. decreased by 5.69% [1] - Baobian Electric fell by 5.15% [1] - Wind范股份 and Baiyun Electric both declined by 3.36% [1]

Summary of Key Points Core Viewpoint - Jinpan Technology experienced a significant block trade on November 17, with a transaction volume of 259,000 shares and a transaction value of 18.907 million yuan, indicating a discount of 8.75% compared to the closing price of the day [2][3] Trading Activity - The block trade was executed at a price of 73.00 yuan per share, with the buyer being CITIC Securities Co., Ltd. and the seller being Guangdong Kaihua Securities Co., Ltd. [2][3] - Over the past three months, Jinpan Technology has recorded a total of four block trades, amounting to a cumulative transaction value of 30.016 million yuan [2] Stock Performance - On the same day, Jinpan Technology's closing price was 80.00 yuan, reflecting an increase of 3.20% [2] - The stock had a turnover rate of 4.43% and a total trading volume of 1.595 billion yuan, with a net outflow of main funds amounting to 307,900 yuan [2] - Over the past five days, the stock has seen a cumulative decline of 12.10%, with total fund outflow reaching 516 million yuan [2] Margin Financing - The latest margin financing balance for Jinpan Technology stands at 1.24 billion yuan, having increased by 110 million yuan over the past five days, representing a growth rate of 9.75% [3]

Group 1: Institutional Research on Popular Companies - The top twenty companies with the highest number of institutional research visits in the last 30 days include United Imaging Healthcare, Aibo Medical, Sanhua Intelligent Control, Zhaoyi Innovation, and Jinpan Technology [11] - In the last five days, the most popular companies for institutional research include Industrial Fulian, Anbotong, Boying Special Welding, Optoelectronics, and Anke Biology [11] - Among the top twenty companies in the last 30 days, 17 companies had ten or more rating agencies involved, with significant net profit growth expected for companies like Jiao Cheng Ultrasound, Ninebot Company-WD, and United Imaging Healthcare in Q1-Q3 of 2025 compared to the same period in 2024 [11][12] Group 2: Shareholder Increase in A-Share Listed Companies - From November 10 to November 14, 2025, only one A-share listed company, Su Nong Bank, announced significant shareholder increase progress [16] - From January 1 to November 14, 2025, a total of 290 companies announced shareholder increase progress, with 74 of them having ten or more rating agencies involved [17] Group 3: Share Buyback Situation in A-Share Listed Companies - From November 10 to November 14, 2025, 70 companies announced buyback progress, with 13 having ten or more rating agencies involved [20] - Among these, 18 companies had an average expected buyback amount exceeding 1% of their market value on the announcement date, with a focus on companies like Rongsheng Environmental Protection, Chengde Lulou, and Jiamei Packaging [20] - From January 1 to November 14, 2025, a total of 1,804 companies announced buyback progress, with 342 having ten or more rating agencies involved, and 91 companies had a significant expected buyback amount [22]

Core Insights - Jinpan Technology executed a block trade of 259,000 shares on November 17, with a transaction value of 18.907 million yuan, representing 1.17% of the total trading volume for the day [1][2] - The transaction price was 73 yuan per share, which is an 8.75% discount compared to the market closing price of 80 yuan [1][2] Summary by Category Trading Activity - A total of 259,000 shares were traded in a block transaction [1] - The total transaction amount reached 18.907 million yuan [1] Price Analysis - The executed price of 73 yuan reflects an 8.75% discount from the closing price of 80 yuan [1]

Core Viewpoint - Solid State Transformers (SST) are expected to become the ultimate solution for AIDC power management due to their high efficiency and low footprint, with Delta's 800V SST system reaching MW-level capacity and Nvidia planning full deployment of its 800V high-voltage direct current architecture by 2027 [1][2]. Group 1: Industry Trends - Data centers are moving towards higher power levels, with power supply system efficiency becoming crucial as single cabinet power has increased from 8KW to over 30KW, and Nvidia's single cabinet power reaching 120KW [2]. - Traditional DC distribution methods are facing bottlenecks due to space limitations, copper overload, and low conversion efficiency, necessitating a new power supply architecture [2]. - In typical AIDC projects, power-related equipment costs account for nearly 50% of total costs, indicating high value and continuous iteration [2]. Group 2: SST Advantages - SST achieves high efficiency by replacing traditional transformers with high-frequency power electronics, allowing for system efficiencies of up to 98% [3]. - SST's modular design significantly reduces equipment size by approximately 40%, integrating rectification, conversion, and inversion processes [3]. Group 3: Market Opportunities - The 800V HVDC is seen as a starting point for SST penetration, offering active flexibility and green electricity adaptability, which can open broader application markets [4]. - SST can actively control power quality, addressing grid disturbances and load fluctuations, while also supporting bi-directional power flow [4]. - The new grid architecture using SST can accept 50%-70% renewable energy, improving performance by 1.3-2 times compared to traditional grid structures [4]. Group 4: Related Companies - Key players in SST systems include Sifang Co., Ltd. (601126.SH), China XD Electric (601179.SH), Jinpan Technology (688676.SH), and Xinte Electric (301120.SZ) [5]. - Companies involved in SST materials include Keli (002782.SZ) and Yunlu Co., Ltd. (688190.SH), with products covering a wide frequency range [5].

Core Viewpoint - The company has approved the first grant of restricted stock under its 2025 Restricted Stock Incentive Plan, awarding 4 million shares at a price of 45.89 yuan per share to 391 eligible participants on November 14, 2025 [2][5][12]. Group 1: Restricted Stock Grant Details - The first grant date for the restricted stock is set for November 14, 2025 [11]. - A total of 4 million shares will be granted, representing approximately 0.87% of the company's total share capital [11]. - The grant price for the restricted stock is 45.89 yuan per share [13]. Group 2: Decision-Making Process - The decision-making process for the grant involved multiple meetings, including the board meeting on August 28, 2025, where the incentive plan was approved [43]. - The company conducted an internal public notice from August 31 to September 9, 2025, regarding the list of proposed grantees, with no objections received [3][43]. - The fourth extraordinary general meeting of shareholders on September 16, 2025, approved the incentive plan and authorized the board to handle related matters [44]. Group 3: Adjustments to Grantee List - The initial list of grantees was adjusted from 399 to 391 due to eight individuals leaving or voluntarily giving up their rights [6][45]. - The total number of restricted shares to be granted remains unchanged despite the adjustment in the number of grantees [6][45]. - The adjustments were made within the authority granted by the shareholders and did not require further shareholder approval [45]. Group 4: Compliance and Legal Opinions - The board confirmed that all grantees meet the eligibility criteria set forth in relevant laws and regulations [20][48]. - A legal opinion from Shanghai Fangda Law Firm confirmed that the adjustments and grants comply with applicable regulations and have received necessary approvals [27][48]. - The board's remuneration and assessment committee has verified that the adjusted list of grantees does not harm the interests of the company or its shareholders [46][48].