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、董事会会议召开情况 证券代码：001388 证券简称：信通电子 公告编号：2025-003 山东信通电子股份有限公司 第四届董事会第十五次会议决议公告 山东信通电子股份有限公司（以下简称"公司"）第四届董事会第十五次会议于 2025年8月11日以现场和通讯相结合的方式在公司会议室召开，会议通知已于2025年8 月7日通过邮件方式送达各位董事。本次会议应出席董事7名，实际出席董事7名，其 中董事郭炉先生、王树亭先生、刘元锁先生以通讯表决方式出席。本次会议由董事长 李全用先生召集并主持，公司部分监事和高级管理人员列席了本次会议。会议的召集、 召开及表决程序符合《中华人民共和国公司法》（以下简称"《公司法》"）等法律、 法规、规范性文件和《公司章程》的有关规定，会议合法有效。 二、董事会会议审议情况 与会董事认真审议，通过了如下议案： 1、审议通过《关于使用募集资金置换预先投入募投项目及已支付发行费用的自 筹资金的议案》 公司以募集资金置换预先投入募投项目及已支付发行费用的自筹资金合计 11,673.45万元，其中 ...

Group 1 - The Hong Kong Stock Exchange announced on August 8 that the Shenzhen Stock Connect list will be adjusted, with five stocks being added to the list effective from August 18 [1][2] - The companies included in the Shenzhen Stock Connect list are: Xintong Electronics (001388.SZ), Tongyu New Materials (301630.SZ), Xinhenghui (301678.SZ), Tefa Information (000070.SZ), and Zhongli Group (002309.SZ) [1][2]

Core Viewpoint - The Hong Kong Stock Exchange announced adjustments to the Shenzhen Stock Connect list, with five stocks being added effective August 18 [1]. Group 1: Companies Added to Shenzhen Stock Connect - The following companies have been included in the Shenzhen Stock Connect list: - Xintong Electronics (信通电子) - Stock Code: 001388.SZ - Tongyu New Materials (同宇新材) - Stock Code: 301630.SZ - Xinhenghui (新恒汇) - Stock Code: 301678.SZ - TeFa Information (特发信息) - Stock Code: 000070.SZ - Zhongli Group (中利集团) - Stock Code: 002309.SZ [2]

Core Viewpoint - Xintong Electronics (001388.SZ) currently does not have any business related to charging piles, but the company will closely monitor this sector in the future [1] Company Summary - Xintong Electronics has confirmed its lack of involvement in the charging pile business at this time [1] - The company expresses intent to keep a close watch on developments in the charging pile industry moving forward [1] Industry Summary - The charging pile sector is highlighted as an area of interest for potential future engagement by Xintong Electronics [1] - The company’s current non-participation in this industry suggests a cautious approach while remaining observant of market trends [1]

格隆汇8月4日丨信通电子(001388.SZ)在投资者互动平台表示，公司目前没有充电桩相关的业务，对该 业务我们后续会保持密切关注。 ...

Quantitative Models and Construction Methods Model Name: New Stock Issuance Model - **Construction Idea**: The model aims to track the performance of newly issued stocks in various market segments, including the main board, ChiNext, and STAR Market[1][12][22]. - **Construction Process**: - Collect data on the number of new stocks issued, the amount of funds raised, and the first-day price performance. - Calculate the average first-day price increase for each market segment. - Formula: $ \text{Single Account Stock Return} = \min(\text{Account Size}, \text{Subscription Limit}) \times \text{Winning Rate} \times \text{Return Rate} $ $ \text{A/B/C Class Investors Full Return} = \text{Subscription Limit} \times \text{A/B/C Class Offline Winning Rate} \times \text{Return Rate} $ - Parameters: - Winning Rate: Actual winning rate of offline new stock issuance. - Return Rate: For new stocks listed on the STAR Market and ChiNext, and under the comprehensive registration system on the main board, the return rate is the first-day average transaction price relative to the issue price. For non-registration system main board stocks, the return rate is the average transaction price on the opening day relative to the issue price[40][41][42]. - **Evaluation**: The model provides a comprehensive view of the performance of new stock issuances across different market segments, helping investors understand the potential returns from participating in new stock offerings[1][12][22]. Model Backtesting Results New Stock Issuance Model - **Main Board**: - A Class: Monthly return rate 0.159%, cumulative return 1.000%[41][42][47] - C Class: Monthly return rate 0.141%, cumulative return 0.908%[41][42][47] - **ChiNext**: - A Class: Monthly return rate 0.035%, cumulative return 1.128%[41][45][47] - C Class: Monthly return rate 0.034%, cumulative return 0.989%[41][45][47] - **STAR Market**: - A Class: Monthly return rate 0.064%, cumulative return 0.547%[41][46][47] - C Class: Monthly return rate 0.063%, cumulative return 0.527%[41][46][47] Quantitative Factors and Construction Methods Factor Name: New Stock Performance Factor - **Construction Idea**: This factor aims to measure the performance of new stocks on their first day of trading, providing insights into the potential returns from participating in new stock offerings[1][12][22]. - **Construction Process**: - Collect data on the first-day price performance of new stocks. - Calculate the average first-day price increase for each market segment. - Formula: $ \text{First-Day Price Increase} = \frac{\text{First-Day Closing Price} - \text{Issue Price}}{\text{Issue Price}} \times 100\% $ - Parameters: - First-Day Closing Price: The closing price of the stock on its first day of trading. - Issue Price: The price at which the stock was issued[1][12][22]. - **Evaluation**: This factor provides a clear measure of the initial performance of new stocks, helping investors gauge the potential returns from participating in new stock offerings[1][12][22]. Factor Backtesting Results New Stock Performance Factor - **Main Board**: - Average first-day price increase: 276.29%[22][23] - **ChiNext**: - Average first-day price increase: 356.00%[22][23] - **STAR Market**: - Average first-day price increase: 174.56%[22][23] Fund Product Performance Fund Product Performance in New Stock Offerings - **Construction Idea**: Measure the participation and success rate of fund products in new stock offerings, and calculate their estimated returns based on their participation and winning rates[57][58][59]. - **Construction Process**: - Collect data on the participation and winning rates of fund products in new stock offerings. - Calculate the estimated returns based on the latest fund quarterly report. - Formula: $ \text{Participation Rate} = \frac{\text{Number of New Stocks Quoted}}{\text{Total Number of New Stocks Issued}} $ $ \text{Winning Rate} = \frac{\text{Number of Valid Quotes}}{\text{Number of New Stocks Quoted}} $ - Parameters: - Participation Rate: The rate at which the fund product participates in new stock offerings. - Winning Rate: The rate at which the fund product's quotes are accepted[57][58][59]. - **Evaluation**: This method provides a detailed view of the performance of fund products in new stock offerings, helping investors understand the potential returns from participating in new stock offerings through fund products[57][58][59]. Fund Product Backtesting Results Fund Product Performance - **Top Performing Funds**: - Middle European Shanghai-Shenzhen 300 Index A: Estimated return rate 0.337%[57][58][59] - ICBC Quality Selection A: Estimated return rate 0.33%[57][58][59] - Huatai-PineBridge Innovation Power: Estimated return rate 0.33%[57][58][59] Institutional Performance Institutional Performance in New Stock Offerings - **Construction Idea**: Measure the participation and success rate of institutions in new stock offerings, and calculate their estimated returns based on their participation and winning rates[60][61][62]. - **Construction Process**: - Collect data on the participation and winning rates of institutions in new stock offerings. - Calculate the estimated returns based on the latest institutional quarterly report. - Formula: $ \text{Participation Rate} = \frac{\text{Number of New Stocks Quoted}}{\text{Total Number of New Stocks Issued}} $ $ \text{Winning Rate} = \frac{\text{Number of Valid Quotes}}{\text{Number of New Stocks Quoted}} $ - Parameters: - Participation Rate: The rate at which the institution participates in new stock offerings. - Winning Rate: The rate at which the institution's quotes are accepted[60][61][62]. - **Evaluation**: This method provides a detailed view of the performance of institutions in new stock offerings, helping investors understand the potential returns from participating in new stock offerings through institutional products[60][61][62]. Institutional Backtesting Results Institutional Performance - **Top Performing Institutions**: - GF Fund: Estimated return rate 1.74 billion[60][61][62] - China Asset Management: Estimated return rate 1.51 billion[60][61][62] - E Fund Management: Estimated return rate 1.33 billion[60][61][62]

- The report tracks the recent performance of the IPO market, including the Sci-Tech Innovation Board, the Growth Enterprise Market, and the Main Board, assuming all stocks are hit and sold at the market average price on the first day of listing, ignoring the lock-up period restrictions [2][10] - The report calculates the IPO yield for different account sizes, with A-class 2 billion scale accounts yielding 1.89%, B-class 2 billion scale accounts yielding 1.69%, A-class 10 billion scale accounts yielding 0.60%, and B-class 10 billion scale accounts yielding 0.55% [2][10] - The report tracks the median number of valid quotation accounts for recent 20 new stocks, with A-class valid quotation accounts for Sci-Tech Innovation Board stocks around 3062, B-class around 1602; A-class valid quotation accounts for Growth Enterprise Market stocks around 3591, B-class around 2079; A-class valid quotation accounts for Main Board stocks around 3790, B-class around 2275 [2][22] - The report lists the recent IPO results, including the issuance price, issuance P/E ratio, industry P/E ratio, number of new shares issued, actual fundraising amount, strategic placement, online issuance, offline issuance, online winning rate, online issuance oversubscription multiple, offline preliminary inquiry oversubscription multiple, offline subscription allocation ratio, and offline issuance effective subscription multiple [24] - The report calculates the theoretical IPO yield for different account sizes, assuming all stocks are hit, sold at the market average price on the first day of listing, and using 90% capital efficiency [39][40] - The report lists the monthly IPO yield and IPO yield rate for different account sizes, assuming all stocks are hit, sold at the market average price on the first day of listing, and using 90% capital efficiency [43][44][45][46] - The report lists the monthly IPO yield and IPO yield rate for different account sizes, assuming all stocks are hit, sold at the market average price on the first day of listing, and using 90% capital efficiency [47][50][51][52][53] - A-class 2 billion scale accounts IPO yield rate is 1.89% [10] - B-class 2 billion scale accounts IPO yield rate is 1.69% [10] - A-class 10 billion scale accounts IPO yield rate is 0.60% [10] - B-class 10 billion scale accounts IPO yield rate is 0.55% [10] - Sci-Tech Innovation Board stocks first-day average increase is 218.45% [16] - Growth Enterprise Market stocks first-day average increase is 227.38% [16] - Sci-Tech Innovation Board stocks A-class valid quotation accounts around 3062 [22] - Sci-Tech Innovation Board stocks B-class valid quotation accounts around 1602 [22] - Growth Enterprise Market stocks A-class valid quotation accounts around 3591 [22] - Growth Enterprise Market stocks B-class valid quotation accounts around 2079 [22] - Main Board stocks A-class valid quotation accounts around 3790 [22] - Main Board stocks B-class valid quotation accounts around 2275 [22] - The highest first-day increase for new stocks is 426.31% [33] - The highest fundraising amount for new stocks is 181.71 billion yuan [33] - The highest full subscription yield for new stocks is 141.4 million yuan [37] - The highest monthly IPO yield for A-class accounts is 248.20 million yuan [44] - The highest monthly IPO yield rate for A-class accounts is 6.22% [44] - The highest monthly IPO yield for B-class accounts is 179.55 million yuan [50] - The highest monthly IPO yield rate for B-class accounts is 5.04% [50]

Market Overview - As of July 23, the Shanghai Composite Index closed at 3582.30 points, with a slight increase of 0.44 points, representing a change of 0.01% [1] - The Shenzhen Component Index closed at 11059.04 points, down by 40.79 points, a decrease of 0.37% [1] - The ChiNext Index closed at 2310.67 points, with a minor decline of 0.19 points, or 0.01% [1] Trading Activity - A total of 101 A-shares had a turnover rate exceeding 20% on this day, indicating significant trading activity [1] - Notably, C Shanda and C Jiyuan had turnover rates above 50%, with 82.89% and 80.75% respectively, indicating a high level of liquidity and interest in these stocks [1] Top Stocks by Turnover Rate - C Shanda (301609) closed at 66.85 CNY, with a turnover rate of 82.89% and a remarkable increase of 356.00% [1] - C Jiyuan (603262) closed at 40.75 CNY, with a turnover rate of 80.75% and a significant rise of 274.54% [1] - Other notable stocks with high turnover rates include: - Guanlong Energy (301151) at 24.11 CNY, turnover rate of 72.29%, down by 5.67% [1] - Weiman Sealing (301161) at 29.81 CNY, turnover rate of 66.12%, down by 16.05% [1] - Southern Road Machinery (603280) at 34.75 CNY, turnover rate of 64.76%, up by 10.00% [1] Additional Noteworthy Stocks - Other stocks with notable trading activity include: - Sichuan Jinding (600678) at 11.15 CNY, turnover rate of 51.91%, down by 4.21% [1] - Baijia Technology (835857) at 9.56 CNY, turnover rate of 47.74%, up by 17.16% [1] - Jindun Co. (300411) at 15.77 CNY, turnover rate of 43.27%, down by 1.93% [1]

Core Viewpoint - The article discusses the recent developments and performance of Xintong Electronics, highlighting its innovative technology in power line inspection and the challenges it faces in maintaining profitability despite its market position [2][3][6]. Group 1: Company Overview - Xintong Electronics, established nearly 30 years ago, has transitioned from a communication-focused company to a key player in the power system sector, offering products like intelligent inspection systems for power lines and substations [7][9]. - The company successfully went public on July 1, with an initial offering price of 16.42 yuan per share [3]. Group 2: Financial Performance - Xintong Electronics has shown impressive revenue growth, with a compound annual growth rate (CAGR) of over 23% from 2018 to 2024, increasing revenue from 284 million yuan to 1.005 billion yuan [12]. - Profitability has also improved, with net income rising from 55 million yuan in 2018 to 143 million yuan in 2024, reflecting a CAGR of 17.26% [13]. Group 3: Market Position and Competition - The company holds a market share of approximately 27%-31% in the domestic power line inspection system market, ranking second behind Zhiyang Innovation [17]. - Despite its leading position, the actual revenue from this segment is projected to be only 650 million yuan in 2024, indicating a limited market size [19]. Group 4: Challenges and Risks - Xintong Electronics faces declining profit margins, with gross margins dropping from 45.36% in 2018 to 33.03% in 2024, a decrease of over 12 percentage points [30]. - The company relies heavily on major clients like State Grid, which accounted for nearly half of its revenue in 2024, raising concerns about its bargaining power and vulnerability to price pressures [28][30]. Group 5: Future Prospects - The potential for growth in the power line inspection market is significant, with current coverage below 50%, suggesting room for expansion [20]. - However, the competitive landscape is expected to intensify as new entrants may disrupt the market, challenging Xintong Electronics' current position [21].

证券代码：001388 证券简称：信通电子 公告编号：2025-002 山东信通电子股份有限公司 关于签订募集资金三方监管协议的公告 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。 近日，山东信通电子股份有限公司（以下简称"公司"或"信通电子"）与 保荐机构招商证券股份有限公司（以下简称"保荐机构"）、招商银行淄博分行、 建设银行淄博高新支行、兴业银行淄博分行、工商银行淄博高新支行、光大银行 济南分行（以下简称"开户银行"）签订了《募集资金三方监管协议》。具体情况 如下： 一、募集资金的基本情况 经中国证券监督管理委员会《关于同意山东信通电子股份有限公司首次公开 发行股票注册的批复》【证监许可（2025）954 号】同意注册，山东信通电子股份 有限公司首次公开发行 A 股股票 3,900 万股，每股发行价人民币 16.42 元，募集 资金总额为人民币 64,038.00 万元，扣除各类发行费用 7,674.80 万元（不含增值 税）后，募集资金净额为人民币 56,363.20 万元。 上述募集资金已于 2025 年 6 月 26 日全部到位，天健会计师事务所（ ...