Group 1: New Stock Issuances - Cash option declaration period for *ST Tianmao (000627) is from September 15 to September 19, 2025[1] - *ST Zitian (300280) has 11 trading days remaining until the last trading day during the delisting arrangement period[1] - *ST Dongtong (300379) has reported severe abnormal fluctuations in stock price[1] Group 2: Market Alerts - Jiushi Media (601929) has experienced significant abnormal fluctuations in stock price[1] - Xian Dao Intelligent (300450) has reported severe abnormal fluctuations in stock price[1] - Hangke Technology (688006) has issued a notice regarding stock performance[1] Group 3: Trading Notifications - Shanghai Construction (600170) has issued a trading notification on September 18, 2025[1] - Junsheng Electronics (600699) has issued a trading notification on September 18, 2025[1] - ST Changyuan (600525) has issued a trading notification on September 18, 2025[1]

Core Insights - The stock of Saiwei Microelectronics increased by 5.13% on September 18, reaching a price of 82.00 CNY per share, with a trading volume of 168 million CNY and a turnover rate of 3.98%, resulting in a total market capitalization of 7.063 billion CNY [1] Company Overview - Saiwei Microelectronics, established on November 2, 2009, is located in Dongguan, Guangdong Province, China. The company specializes in the research and sales of analog chips, primarily focusing on battery management chips, and has expanded its product range to include various power management chips such as battery safety chips, battery metering chips, and charging management chips. The company's main business revenue is entirely derived from chips, accounting for 100% of its income [1] Fund Holdings - According to data from the top ten holdings of funds, one fund under Wanjia Fund has a significant position in Saiwei Microelectronics. The Wanjia Technology Quantitative Stock Mixed Fund A (020975) held 9,100 shares in the second quarter, representing 2.02% of the fund's net value, making it the largest holding. The estimated floating profit from this position is approximately 36,400 CNY [2] - The Wanjia Technology Quantitative Stock Mixed Fund A (020975) was established on September 24, 2024, with a latest scale of 19.3044 million CNY. Year-to-date, the fund has achieved a return of 37.67%, ranking 1982 out of 8172 in its category, and has a cumulative return of 42.7% since inception [2] - The fund manager, Yin Hang, has been in the position for 5 years and 61 days, managing total assets of 468 million CNY. The best return during his tenure is 59.74%, while the worst return is -8.76% [2]

New Stock Issuance - Cash option declaration period for *ST Tianmao (000627) is from September 15 to September 19, 2025[1] - *ST Zitian (300280) has 12 trading days remaining until the last trading day during the delisting arrangement period[1] Trading Alerts - *ST Jishi Media (601929) reported severe abnormal fluctuations in stock price[1] - *ST Yushun (002289) and *ST Weier (002058) are under scrutiny due to abnormal trading activities[1] Company Announcements - *ST Gao Hong (000851) and *ST Dongtong (300379) have recent announcements regarding their financial status[1] - Shanghai Construction (600170) and Zhongke Shuguang (603019) have disclosed important updates on their operations[1] Market Trends - The report indicates a trend of increased scrutiny on companies with abnormal trading patterns, reflecting a tightening regulatory environment[2] - The number of companies under cash option declarations and delisting arrangements suggests a potential increase in market volatility[1]

在 2025 年 1 月 1 日至 2025 年 6 月 30 日持续督导期内（以下简称"本持续 督导期间"），保荐机构及保荐代表人按照《证券发行上市保荐业务管理办法》 （以下简称"保荐办法"）、《上海证券交易所科创板股票上市规则》（以下简称 "上市规则"）等相关规定，通过日常沟通、定期回访、现场检查、尽职调查等 方式进行持续督导，现就 2025 年 1-6 月持续督导情况报告如下： | | | | 项 目 | 工作内容 | | --- | --- | | 1、建立健全并有效执行持续督导工作制 | 保荐机构已建立健全并有效执行持续督导 | | 度，针对公司的具体情况确定持续督导的 | 工作制度，针对公司的具体情况确定持续 | | 内容和重点，督导公司履行有关上市公司 | 督导的内容和重点，督导公司履行有关上 | | 规范运作、信守承诺和信息披露等义务， | 市公司规范运作、信守承诺和信息披露等 | | 审阅信息披露文件及向中国证监会、证券 | 义务，审阅信息披露文件及向中国证监 | | 交易所或其他机构提交的其他文件，并按 | 会、证券交易所或其他机构提交的其他文 | 1 | 项 目 | 工作内容 | | - ...

New Stock Issuance - Jin Hua New Material (920015) issued at a price of 18.15[1] - Jianfa Zhixin (301584) issued at a price of 7.05[1] Market Alerts - Cash option declaration period for *ST Tianmao (000627) from September 15 to September 19, 2025[1] - 13 trading days remaining for the delisting period of Zitian Tui (300280)[1] - Severe abnormal fluctuation reported for Jishi Media (601929)[1] Other Announcements - Multiple companies including Shanghai Construction (600170) and Zhongke Shuguang (603019) have recent announcements linked[1] - Various stocks are under scrutiny for abnormal trading activities, including *ST Yu Shun (002289) and ST Huaneng (000851)[3]

证券代码：688325 证券简称：赛微微电 公告编号：2025-064 本次活动将在深圳市全景网络有限公司提供的网上平台采用网络远程的方 式举行，投资者可登录"全景路演"网站（http://rs.p5w.net）参与本次互动交流， 活动时间为 2025 年 9 月 19 日（周五）15:30-17:00。 届时，公司高管将通过网络互动模式，就公司 2025 年半年度业绩、经营状 况等投资者关心的问题，与投资者进行沟通与交流，欢迎广大投资者积极参与。 特此公告。 广东赛微微电子股份有限公司 关于参加 2025 年广东辖区投资者集体接待日 暨辖区上市公司中报业绩说明会的公告 本公司董事会及全体董事保证本公告内容不存在任何虚假记载、误导性陈述或者 重大遗漏，并对其内容的真实性、准确性和完整性依法承担法律责任。 为加强与投资者的互动交流，进一步提升投资者关系管理水平，广东赛微微 电子股份有限公司（以下简称"公司"）将参加由广东证监局、广东上市公司协 会与深圳市全景网络有限公司联合举办的"向新提质价值领航——2025 年广东 辖区投资者集体接待日暨辖区上市公司中报业绩说明会"，现将相关事项公告如 下： 董事会 广东赛微 ...

Group 1 - The core point of the news is that Saiwei Microelectronics experienced a decline in stock price, dropping by 5.15% to 75.88 CNY per share, with a trading volume of 2.58 billion CNY and a turnover rate of 6.14%, resulting in a total market capitalization of 6.536 billion CNY [1] - Saiwei Microelectronics, established on November 2, 2009, and listed on April 22, 2022, is located in Dongguan, Guangdong Province. The company specializes in the research and sales of analog chips, primarily focusing on battery management chips, and has expanded its product range to include battery safety chips, battery metering chips, and charging management chips, with 100% of its revenue coming from chip sales [1] Group 2 - From the perspective of major fund holdings, one fund under Wan Jia Fund has a significant position in Saiwei Microelectronics. The Wan Jia Technology Quantitative Stock Mixed Fund A (020975) held 9,100 shares in the second quarter, accounting for 2.02% of the fund's net value, making it the largest holding [2] - The Wan Jia Technology Quantitative Stock Mixed Fund A (020975) was established on September 24, 2024, with a latest scale of 19.3044 million CNY. It has achieved a return of 35% this year, ranking 2025 out of 8174 in its category, and a cumulative return of 39.93% since inception [2] - The fund manager, Yin Hang, has been in the position for 5 years and 59 days, managing total assets of 468 million CNY. During his tenure, the best fund return was 58.15%, while the worst was -8.26% [2]

Group 1 - China has initiated anti-dumping investigations against American-made analog chips and anti-discrimination investigations related to integrated circuits on the same day, marking a significant counteraction in the ongoing chip war with the U.S. [1][2] - The U.S. Department of Commerce recently added 32 entities to its export control "entity list," with 23 of them located in China and many involved in the chip business, which may have triggered China's response [2][3] - The ongoing trade talks between China and the U.S. in Spain may be influenced by these actions, suggesting a strategy of "fighting while negotiating" [3][4] Group 2 - Nvidia has been found in violation of antitrust laws by China's State Administration for Market Regulation (SAMR), which has decided to conduct further investigations [8][10] - The investigation relates to Nvidia's acquisition of Mellanox Technologies in 2019, which was approved under certain conditions to prevent anti-competitive practices [12][15] - Nvidia's current supply of H20 chips to China is significantly limited in performance compared to its H200 chips, raising concerns about compliance with fair trade practices [18][17] Group 3 - The anti-dumping investigation targets analog chips produced by U.S. companies, with the investigation period set from January 1, 2024, to December 31, 2024 [31][32] - The application for the investigation cites that U.S. companies have significantly increased their product imports to China while simultaneously lowering prices, adversely affecting domestic producers [36][39] - If the anti-dumping investigation is upheld, it could lead to substantial penalties for major U.S. chip companies, potentially impacting their revenues in China, which exceed $10 billion collectively [41] Group 4 - The Chinese government is also conducting an anti-discrimination investigation against U.S. measures that restrict high-end chips while allowing low-end chips to flood the market, which are seen as discriminatory trade practices [44][45] - The outcome of these investigations could lead to increased tariffs or restrictions on U.S. products if found to be unfair [45][46] - The ongoing investigations and trade tensions highlight the complex dynamics of the U.S.-China trade relationship, particularly in the semiconductor sector [46][47]

Core Viewpoint - The company, Saiwei Microelectronics, announced that its stock price experienced an abnormal fluctuation, with a cumulative increase of over 30% in the closing price over three consecutive trading days from September 11 to September 15, 2025 [2]. Summary by Relevant Sections - **Stock Performance** The stock price of Saiwei Microelectronics showed a significant increase, with a cumulative rise exceeding 30% over three trading days [2]. - **Company's Response** Following the abnormal stock price movement, the company conducted a self-examination and inquired with its controlling shareholder and actual controller, confirming that there are no undisclosed significant matters related to the company as of the announcement date [2]. - **Operational Status** The company reported that its production and operations are normal, with no significant changes occurring in its business activities [2].

Core Viewpoint - The Ministry of Commerce has initiated an anti-dumping investigation into imported analog chips from the United States, leading to a significant rise in the A-share analog chip sector on September 15, 2023 [1][4]. Group 1: Investigation Details - The anti-dumping investigation was formally requested by the Jiangsu Semiconductor Industry Association on July 23, 2023, targeting analog chips imported from the U.S. [2]. - The investigation involves four major U.S. manufacturers: Texas Instruments, Analog Devices, Broadcom, and ON Semiconductor [3]. - Preliminary evidence indicates that the price of the investigated products has significantly decreased, with a dumping margin exceeding 300%, and these products account for an average market share of 41% in China [4]. Group 2: Market Impact - Following the announcement, the A-share market saw stocks like Shengbang Co. and Shanghai Beiling hit the daily limit, while Naxinwei and SIRUI experienced gains of 10.79% and 9.68% respectively [1]. - The investigation is expected to benefit domestic companies such as Naxinwei and SIRUI, which are well-positioned in the automotive and industrial sectors [11]. Group 3: Industry Reactions - The China Semiconductor Industry Association expressed support for the investigation, emphasizing the need for a fair environment for the semiconductor industry's development [6]. - The China Communication Enterprise Association criticized the U.S. government's unilateral actions that harm Chinese companies and called for necessary measures to protect their rights [7]. Group 4: Product Scope - The investigation covers general-purpose interface chips and gate driver chips produced using 40nm and above process technology, including both finished chips and raw materials like wafers and die [9][13]. - The products are primarily used in automotive and industrial systems [10]. Group 5: Market Dynamics - Despite an increase in domestic analog chip self-sufficiency, major players like Texas Instruments and Analog Devices still dominate the market [17]. - Texas Instruments reported a revenue of approximately $3 billion from China in 2024, a 9% decrease year-on-year, while Analog Devices reported about $2.1 billion, down 5% [16].