Core Viewpoint - Shanghai Tunnel Engineering Co., Ltd. announced a change in the equity stake of its major shareholder, Shanghai Urban Construction (Group) Co., Ltd., which increased its holding from 30.68% to 31.05% [1][2]. Group 1: Shareholder Information - The equity change was executed by Shanghai Urban Construction (Group) Co., Ltd., which is the controlling shareholder and its action is in line with a previously disclosed shareholding increase plan [2]. - The increase in shareholding does not trigger mandatory tender offer obligations [2]. Group 2: Equity Change Details - The number of shares held before the change was not specified, but the increase in percentage indicates a direct acquisition of shares [1]. - The equity change occurred between May 19, 2025, and May 20, 2025 [1]. Group 3: Compliance and Future Plans - The equity change complies with relevant laws and regulations, including the Securities Law of the People's Republic of China and the Management Measures for the Acquisition of Listed Companies [2]. - The increase in shareholding will not lead to a change in the controlling shareholder or actual controller of the company [2]. - The shareholding increase plan is not yet fully implemented, and the company will continue to monitor and disclose information regarding the plan [2].

重要内容提示： | 权益变动方向 | 比例增加□ | | 比例减少□ | | --- | --- | --- | --- | | 权益变动前合计比例 | 30.68% | | | | 权益变动后合计比例 | 31.05% | | | | 本次变动是否违反已作出的承 | 是□ | 否□ | | | 诺、意向、计划 | | | | | 是否触发强制要约收购义务 | 是□ | 否□ | | 一、 信息披露义务人及其一致行动人的基本信息 | 证券代码：600820 | 证券简称：隧道股份 | | | 公告编号：临 | 2025-023 | | --- | --- | --- | --- | --- | --- | | 债券代码：185752 | 债券简称：22 | 隧道 | 01 | | | | 债券代码：115633 | 债券简称：23 | 隧道 | K1 | | | | 债券代码：115902 | 债券简称：23 | 隧道 | K2 | | | 上海隧道工程股份有限公司关于持股 5%以上股东权益变动 触及 1%刻度的提示性公告 上海城建（集团）有限公司保证向本公司提供的信息真实、准确、完整，没有虚假记载、误 ...

Investment Rating - The report maintains an "Overweight" rating for the construction and engineering sector [6] Core Insights - The construction sector experienced its first annual revenue decline in 2024, with a YoY decrease of 4.10%, and a net profit decline of 14.4% due to multiple pressures including a slowdown in real estate construction and traditional infrastructure investment [1][15] - The sector is expected to enter a phase of deep integration, with potential for performance improvement in the latter half of 2025 as policies take effect and the high base effect diminishes [1][21] Summary by Sections Industry Overview - In 2024, the construction sector's revenue was 8.7 trillion yuan, marking a YoY decline of 4.10%, while net profit was 168.9 billion yuan, down 14.4% [15] - The sector's gross profit margin improved slightly to 10.96%, but the net profit margin decreased to 1.94% [15][24] Financial Performance - The sector's financial expenses increased, leading to a decline in net profit margins, with a financial expense ratio of 0.86%, up 0.11 percentage points YoY [2][39] - The cash flow situation showed a net outflow of 209.7 billion yuan, a reduction of 22 billion yuan YoY, indicating some improvement in cash flow management [2][46] Subsector Analysis - Among the subsectors, only international engineering saw a profit increase of 5.5%, while other subsectors like large-scale infrastructure and chemical engineering experienced declines of 11.5% and 1.2%, respectively [3][52] - The resilience of large state-owned enterprises in the international market contrasts with the significant pressures faced by smaller and private firms [3][52] Investment Recommendations - The report suggests focusing on high-dividend value state-owned enterprises such as China State Construction, China Communications Construction, and Sichuan Road and Bridge, which are expected to benefit from stable demand and improving cash flow [5][9] - The report highlights growth opportunities in specialized engineering sectors, particularly in data centers and cleanroom engineering, which are anticipated to see rapid demand growth [5][9]

Core Points - The company will hold a performance briefing for the fiscal year 2024 and the first quarter of 2025 on May 28, 2025, from 09:30 to 11:30 [1][2] - The briefing will be conducted via video live streaming and online interaction through the Shanghai Stock Exchange Roadshow Center [1][4] - Investors can submit questions from May 21 to May 27, 2025, and the company will address commonly asked questions during the briefing [1][3] Meeting Details - The performance briefing is scheduled for May 28, 2025, from 09:30 to 11:30 [2][3] - Participants will include the Chairman and CFO, independent directors, and the board secretary [2] - Investors can join the meeting online through the Shanghai Stock Exchange Roadshow Center website [2][4] Contact Information - Contact person for inquiries is Shan Yingkun, reachable at phone number 021-65419590 or via email at 600820@stec.net [3][5] - The company’s stock code is 600820, and the bond codes include 185752 and 115633 [3]

| 证券代码：600820 | 股票简称：隧道股份 | | | 编号：临 2025-022 | | --- | --- | --- | --- | --- | | 债券代码：185752 | 债券简称：22 | 隧道 | 01 | | | 债券代码：115633 | 债券简称：23 | 隧道 | K1 | | | 债券代码：115902 | 债券简称：23 | 隧道 | K2 | | 上海隧道工程股份有限公司 关于召开 2024 年度暨 2025 年第一季度业绩说明会的公告 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、准确性和完整性承担法律责任。 重要内容提示： https://roadshow.sseinfo.com/） 会议召开方式：上证路演中心视频直播和网络互动 投资者可于 2025 年 05 月 21 日（星期三）至 05 月 27 日（星期二） 16:00 前登录上证路演中心网站首页点击"提问预征集"栏目或通过 公司邮箱 600820@stec.net 进行提问。公司将在说明会上对投资者普 遍关注的问题进行回答。 三、参加人员 董事长兼财务总 ...

Group 1 - The China Securities Regulatory Commission has recently issued a decision to amend the "Measures for the Administration of Major Asset Restructuring of Listed Companies," encouraging private equity funds to participate in mergers and acquisitions of listed companies. The investment period for private equity funds is linked to the lock-up period for shares obtained through restructuring, reducing the lock-up period from 12 months to 6 months for those who have held investments for 48 months [1] - The U.S. Department of Commerce has announced that using Huawei's Ascend chips is considered a violation of U.S. export control regulations, which has been met with strong opposition from China [3] - Nvidia's CEO has indicated that due to U.S. government restrictions on the export of the Hopper architecture H20 chip to China, the company is reassessing its market strategy in China and will not launch the Hopper series chips in the future [3] Group 2 - The 15th China Airshow showcased the "Jiutian" drone, which is expected to complete its first flight by the end of June. A notable feature of this drone is the integrated "heterogeneous hive mission cabin," capable of carrying over a hundred loitering munitions or small drones, earning it the nickname "aerial drone carrier" [2] - China's J-10CE fighter jet has achieved its first combat success by shooting down multiple enemy aircraft without sustaining any losses, drawing significant attention from global military enthusiasts [2] - The National Financial Supervision and Administration has approved China Life Asset Management to participate in the third batch of long-term investment reform pilot programs for insurance funds, with the Honghu Fund having successfully invested 50 billion yuan by early March 2025 [3] Group 3 - Ningde Times has announced an H-share offering price of 263.00 HKD per share, with H-shares expected to be listed on the Hong Kong Stock Exchange on May 20. The company also plans to invest up to 225 million USD in an industrial investment fund [4] - Wentai Technology has announced plans to sell assets worth 4.389 billion yuan to Luxshare Precision and Luxshare Communications, focusing on the development of its semiconductor business [4] - Guizhou Moutai has reported a total share repurchase of 2.6421 million shares, amounting to 4.05 billion yuan [4]

Core Viewpoint - Multiple listed companies in the Shanghai and Shenzhen markets announced significant developments, providing insights for investors [2] Investment Activities - Ningde Times plans to invest up to $225 million in the Lochpine Green Fund I, LP, focusing on carbon neutrality, with a target size of $1.5 billion [3] - Baiyun Airport intends to invest 4.5 million yuan to establish a duty-free company with partners, with a total registered capital of 45 million yuan [4] - Guizhou Moutai has repurchased a total of 2.6421 million shares, amounting to 4.05 billion yuan, representing 0.2103% of its total share capital [5] - Zhonghang Gaoke's subsidiary plans to invest 918 million yuan in enhancing capabilities for civil aviation composite materials [12] Shareholding Changes - Huaxi Group will transfer 16.01% of its shares in Chengxing Co. to Jiangyin Lianying for 511 million yuan, with no change in controlling shareholder [6] - Tunnel Co.'s controlling shareholder plans to increase its stake by investing between 250 million to 500 million yuan [13] Stock Adjustments - *ST Aonong will remove its delisting risk warning, changing its name to Aonong Biological, with a price fluctuation limit adjustment from 5% to 10% [7] - *ST Kexin will also remove its delisting risk warning, changing its name to Kexin Development, with similar price fluctuation adjustments [9] Market Performance - Ningbo Shipping reported normal operations and no undisclosed significant information, with its rolling P/E ratio significantly higher than the industry average [8] - Liren Lizhuang stated that products containing "ergothioneine" contribute minimally to overall sales, indicating limited impact on business performance [10] Share Buyback Plans - Jianghan New Materials plans to repurchase shares worth 200 million to 400 million yuan, with a maximum price of 30 yuan per share [14]

Group 1 - The China Securities Regulatory Commission (CSRC) encourages private equity funds to participate in mergers and acquisitions of listed companies, establishing a simplified review process for the first time [1] - The CSRC has adjusted regulatory requirements for issuing shares to purchase assets and introduced a phased payment mechanism for the first time [1] - The CSRC has introduced a "reverse linkage" arrangement for private equity funds for the first time [1] Group 2 - Multiple public fund industry insiders stated that recent analyses regarding public fund assessment benchmarks leading to market adjustments are inaccurate and lack basic knowledge and evidence [2] Group 3 - The Hong Kong Hang Seng Index will include Midea Group and ZTO Express, while BYD will join the Hang Seng Tech Index, removing Reading Group [3] Group 4 - E Fund announced that renowned fund manager Zhang Kun will no longer serve as deputy general manager due to work adjustments and will focus on investment management in the future [4] Group 5 - Jinlitai's board disagreed with shareholders' proposal to convene an extraordinary general meeting [5] - 20CM's two consecutive trading limits for Toxin Pharmaceutical: Ivos will reduce its holdings by 1.3128 million shares from March 14 to May 15, 2025 [5] - Tailing Microelectronics: The National Fund's shareholding ratio has decreased to 6.95% [5] - Two consecutive trading limits for Liren Liyang: The revenue proportion of ergotamine products is very low [5] - Tunnel Holdings: The controlling shareholder plans to increase its stake in the company by 250 million to 500 million yuan [5] - CATL announced the H-share offering price set at HKD 263.00 per share [5]

Group 1 - Baiyun Airport plans to invest 4.5 million yuan to establish a duty-free company with China Duty Free Group and others, holding 10% of the new company's registered capital of 45 million yuan [2] - Guizhou Moutai has repurchased a total of 2.6421 million shares, accounting for 0.2103% of the total share capital, with a total payment of 4.05 billion yuan as of May 16, 2025 [3] - *ST Aonong has removed the delisting risk warning, and its stock will be suspended for one day on May 19, 2025, with a name change to Aonong Biological from May 20, 2025 [4] Group 2 - Ningbo Shipping confirms normal operations and has no undisclosed significant information, with its latest rolling P/E ratio at 18,811.36, significantly higher than the industry average of 9.61 [5] - Tunnel Holdings' controlling shareholder plans to increase its stake in the company by 250 million to 500 million yuan, not exceeding 2% of the total share capital [6] - Jianghan New Materials intends to repurchase shares worth 200 million to 400 million yuan at a price not exceeding 30 yuan per share, representing approximately 1.79% to 3.57% of the total share capital [7]

Group 1 - China State Construction signed new contracts totaling 1.52 trillion yuan from January to April, representing a year-on-year increase of 2.8% [1] - Yongpu Medical's subsidiary obtained a medical device business license valid until May 7, 2030, allowing it to engage in medical device retail and wholesale [1] - Ningbo Maritime received a government subsidy of 4.42 million yuan, which will impact its net profit for the fiscal year 2025 [1] Group 2 - Mingpu Optoelectronics obtained a patent for a magnetic powder core and its preparation method, enhancing its capabilities in magnetic materials technology [1] - Digital Zhitong plans to establish a wholly-owned subsidiary in Beijing with a registered capital of 5 million yuan [1] - Zhongmin Energy's shareholder plans to reduce its stake by up to 0.28% of the company's total shares [1][6] Group 3 - Tunnel Holdings' controlling shareholder intends to increase its stake in the company by investing between 250 million to 500 million yuan [1] - China Telecom appointed Liu Guiqing as the new President and COO [1] - Datang Power completed the issuance of 3 billion yuan in medium-term notes, with proceeds aimed at repaying debt and supplementing working capital [1] Group 4 - *ST Weihai won a bid for a flood control project worth 182 million yuan, accounting for 7.35% of its audited revenue for 2024 [1] - Huijin Tong announced a cash dividend of 0.0868 yuan per share, totaling 29.44 million yuan [1] - Xinkai Energy's shareholders plan to reduce their holdings by a combined total of 4% of the company's shares [1][39] Group 5 - Xinhuan Group's subsidiary won a 1.02 billion yuan nuclear power project contract [1] - Southern Airlines reported a 12.14% year-on-year increase in passenger turnover for April [1] - Xinjiang Torch plans to acquire 100% equity of Yushan Litai for 125 million yuan [1]