New Stock Listings - Baiaosaitu (688796) listed at an issue price of 26.68 on December 10, 2025[1] - Quanyin Gaoke (300087) has a tender offer period from December 4, 2025, to January 5, 2026[1] - Tiangong Co. (605255) has a tender offer period from November 20, 2025, to December 19, 2025[1] Delisting and Trading Alerts - ST Guangdao (920680) enters the delisting arrangement period starting December 11, 2025[1] - ST Suwu (600200) has 13 trading days remaining until the last trading day[1] Market Volatility - Hai Xin Food (002702) reported severe abnormal fluctuations[1] - Anji Food (603696) and other companies are under observation for abnormal trading activities[2] Additional Announcements - Multiple companies including Dongbai Group (600693) and Nanjing Business Travel (600250) have recent announcements linked to their stock codes[1] - Various companies are linked to announcements regarding abnormal fluctuations and trading activities[3]

New Stock Issuance - New stocks issued include 纳百川 (code: 301667) at an issuance price of 22.63 and 优迅股份 (code: 787807) at 51.66[1] Rights Issues and Announcements - 荃银高科 (code: 300087) has a tender offer period from December 4, 2025, to January 5, 2026[1] - 天普股份 (code: 605255) has a tender offer period from November 20, 2025, to December 19, 2025[1] Delisting and Special Notices - *ST广道 (code: 920680) will enter the delisting arrangement period starting December 11, 2025[1] - *ST苏吴 (code: 600200) will enter the delisting arrangement period starting December 9, 2025[1] Stock Performance Alerts - 赛微电子 (code: 300456) reported severe abnormal fluctuations[1] - 海王生物 (code: 000078) and 瑞达期货 (code: 002961) also reported significant fluctuations[1] Additional Stock Announcements - 航天发展 (code: 000547) and 顺灏股份 (code: 002565) have issued announcements regarding their stock performance[1]

（文章来源：证券日报） 证券日报网讯 12月4日晚间，北大医药发布公告称，天健会所作为公司2025年度财务报表和2025年末财 务报告内部控制审计机构，原委派欧阳小云先生和王娟女士作为公司2025年度财务报表审计报告和2025 年末财务报告内部控制审计报告的签字注册会计师。由于事务所内部工作调整，现改派赵兴明先生、黄 娜女士接替欧阳小云先生、王娟女士作为签字注册会计师继续为公司提供审计服务。变更后的签字注册 会计师为赵兴明先生和黄娜女士。 ...

证券代码：000788 证券简称：北大医药 公告编号：2025-091 北大医药股份有限公司 关于变更签字注册会计师的公告 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。 二、本次变更签字注册会计师信息 1、基本信息 赵兴明先生：2006 年起成为注册会计师，2005 年开始从事上市公司审计，2012 年开始在天健会所执业，2023 年起为本公司提供审计服务；近三年签署四川长虹、 海南橡胶、重庆啤酒、长虹华意、秦安股份等上市公司年度审计报告，复核四方 科技、海星股份、安科瑞等上市公司年度审计报告。 黄娜女士：2010 年起成为注册会计师，2008 年开始从事上市公司审计，2012 年开始在天健会所执业，2022 年起为本公司提供审计服务；近三年签署北大医药、 正川股份、旺成科技、博腾股份、三羊马等上市公司审计报告。 2、独立性和诚信情况 赵兴明先生和黄娜女士不存在违反《中国注册会计师职业道德守则》有关独 立性要求的情形，最近三年未曾因执业行为受到过刑事处罚、行政处罚、监督管 理措施和纪律处分。 北大医药股份有限公司（以下简称"公司"或"本公司"）于2025年7 ...

New Stock Listings - Jingchuang Electric (920035) listed at an issuance price of 12.10 on December 2, 2025[1] - Tianpu Co., Ltd. (605255) is in the offer period from November 20 to December 19, 2025[1] Market Alerts - ST Suwu (600200) enters the delisting arrangement period starting December 9, 2025[1] - Jianglong Shipbuilding (300589) reported severe abnormal fluctuations[1] Recent Announcements - Multiple companies including Beida Pharmaceutical (000788) and ST Green Health (002868) have recent announcements regarding their stock activities[1] - A total of 30 companies have been flagged for abnormal trading activities in the last week[2]

Group 1: New Stock Offerings - Tianpu Co., Ltd. (Stock Code: 605255) has a tender offer period from November 20, 2025, to December 19, 2025[1] - Jianglong Shipbuilding (Stock Code: 300589) reported severe abnormal fluctuations[1] - Peking University Medicine (Stock Code: 000788) announced a trading update[1] Group 2: Trading Updates - Tongyu Communication (Stock Code: 002792) reported a trading update on December 1, 2025[1] - Daoming Optics (Stock Code: 002632) also provided a trading update on December 1, 2025[1] - Rongji Software (Stock Code: 002474) issued a trading update on December 1, 2025[1] Group 3: Abnormal Fluctuations - Ruineng Technology (Stock Code: 603933) reported a trading update on November 29, 2025, with a fluctuation of 6%[1] - Maoye Commercial (Stock Code: 600828) also reported a fluctuation of 6% on November 29, 2025[1] - Heshun Petroleum (Stock Code: 603353) reported a fluctuation of 7% on November 29, 2025[1]

（文章来源：证券时报网） 数据宝统计，截至14:48，北大医药成交额11.08亿元，创2022年5月16日以来新高。最新股价上涨 2.33%，换手率26.38%。上一交易日该股全天成交额为6.55亿元。 据天眼查APP显示，北大医药股份有限公司成立于1993年05月18日，注册资本59598.7425万人民币。 （数据宝） ...

Core Points - The Shanghai Composite Index closed at 3864.18 points, down 0.15%, with a trading volume of 701.02 billion yuan [1] - The Shenzhen Component Index closed at 12907.83 points, up 1.02%, with a trading volume of 1082.33 billion yuan [1] - The ChiNext Index closed at 3044.70 points, up 2.14%, with a trading volume of 523.60 billion yuan [1] Sector Performance - The CPO concept stocks showed strong performance, with Changguang Huaxin achieving two consecutive limit-ups and Zhongji Xuchuang rising over 13% [1] - Pharmaceutical stocks rallied across the board, led by flu and innovative drug concepts, with stocks like Guangdong Wannianqing, Huaren Health, and Peking University Medicine hitting the daily limit [1] - Retail stocks surged in the last trading session, with Dongbai Group and Guoguang Chain among those reaching the daily limit [1] - The military industry sector experienced a pullback, with Aerospace Development hitting the daily limit down [1] - Sectors such as semiconductors, components, Hainan Free Trade Zone, and humanoid robots saw significant gains, while sectors like aquatic products, banking, and tourism faced declines [1]

Key Points - The announcement highlights various corporate activities including partnerships, contracts, and share buybacks [1][2] - Notable companies mentioned include 实达集团, 北大医药, and 福建高速, among others [1][2] Group 1: Company Announcements - 实达集团 has not engaged in any business cooperation with 阿里云 [1] - 北大医药's related flu medication has not yet been organized for production and sales [1] - 福建高速 plans to invest 180 million yuan in the capital increase project of 海峡保险 for 2025 [1] Group 2: Contracts and Projects - 圣晖集成 has signed daily operational contracts worth 278 million yuan [1] - 广电运通 is undertaking the construction of an artificial intelligence application pilot base [1] - 江海股份 intends to jointly establish a research institute with related parties [1] Group 3: Equity Transactions - 华峰铝业 plans to acquire 100% equity of 华峰普恩 for 100 million yuan [1] - 海南高速's subsidiary intends to acquire 51% equity of 海南华特 [1] - 阿拉丁 plans to purchase 35% equity of 佑科 for 61.25 million yuan, enhancing its product line in general analytical instruments [1] Group 4: Share Buybacks and Reductions - 东方创业 intends to repurchase company shares worth 50 million to 100 million yuan [2] - 上海机电 plans to buy back between 10.2274 million and 20.4548 million shares [2] - 南方精工's actual controller's concerted party plans to reduce holdings by no more than 2.54% [2]

Industry News - The China Insurance Industry Association issued a risk warning regarding the "Anwo Stock Insurance" business, stating that it is not an approved insurance product and that stock investment losses are not insurable. The platform's activities may involve illegal financial operations [6]. - Beijing's Internet Information Office and the Beijing Financial Regulatory Bureau launched a three-month campaign to address six types of online financial misconduct, focusing on misleading public information and illegal financial services [7]. - The Ministry of Industry and Information Technology and five other departments released a plan to enhance the adaptability of supply and demand for consumer goods, aiming for a significant optimization of the supply structure by 2027, with three trillion-level consumption sectors and ten hundred-billion-level consumption hotspots [7]. - The Ministry of Natural Resources announced breakthroughs in the efficient extraction of low-grade rare metals from coal, aluminum, copper, lead, and zinc ores, with significant improvements in recovery rates for various metals [7]. - The first hydrogen refueling station in China utilizing underground hydrogen storage technology has been operational for over 1500 days, supplying over 400 tons of hydrogen, marking a significant advancement in high-pressure underground hydrogen storage technology [8]. Company News - Dongwei Technology announced a significant increase in PCB plating equipment orders, driven by rapid growth in the PCB and memory sectors, with expected record-high order amounts this year [11]. - North University Pharmaceutical stated that related flu medications have not yet been produced or sold, and this will not impact the company's performance for a considerable time [12]. - *ST Dongtong disclosed that its annual reports from 2019 to 2022 contained false records and has received a notice of termination of listing [13]. - Debang Technology's largest shareholder, the National Big Fund, reduced its stake by 2% between September 11 and October 16, completing its reduction plan [13]. - Muxi Co., Ltd. plans to issue 40.1 million shares, with the initial strategic placement of 8.02 million shares, and the subscription date set for December 5, 2025 [15].