Core Viewpoint - The company will disclose the shareholding status of its top ten shareholders as of September 30, 2025, in its third-quarter report scheduled for release on October 29, 2023 [1] Group 1 - An investor inquired about the shareholding status of the fourth largest shareholder, China CITIC Limited, as of October 21, 2025 [1] - The company confirmed that the information will be included in the upcoming third-quarter report [1]

Core Viewpoint - The Chinese stock market experienced slight declines, with the Shanghai Composite Index down by 0.07% and the Shenzhen Component Index down by 0.62%, indicating a mixed market sentiment amid varying sector performances [1]. Market Performance - The Shanghai Composite Index closed at 3913.76 points with a trading volume of 741.525 billion [1]. - The Shenzhen Component Index closed at 12996.61 points with a trading volume of 926.332 billion [1]. - The ChiNext Index closed at 3059.32 points with a trading volume of 412.990 billion [1]. Sector Highlights - The oil and gas extraction sector saw significant gains, with companies like Beiken Energy, Sinopec Oilfield Service, and Zhun Oil Co. hitting the daily limit [1]. - The real estate sector also performed strongly, with firms such as Yingxin Development, Guangming Real Estate, and Tianbao Infrastructure reaching the daily limit [1]. - The gold sector faced weakness throughout the day, with Western Gold and Hunan Gold dropping over 4% [1]. Other Notable Concepts - Concepts such as combustible ice, Tianjin Free Trade Zone, lab-grown meat, wind power equipment, and engineering machinery showed strong performance [1]. - Conversely, sectors like coal mining and processing, gas, and port shipping experienced notable declines [1].

Core Insights - Southbound funds reduced their holdings in Sinopec Oilfield Service Corporation (01033.HK) by 4.386 million shares on October 22, 2025, marking a decrease of 0.53% [1][2] - Over the past five trading days, there were four days of net increases in holdings by southbound funds, totaling a net increase of 20.34 million shares [1] - In the last 20 trading days, there were 14 days of net increases, with a cumulative net increase of 25.556 million shares [1] - As of now, southbound funds hold 823 million shares of Sinopec Oilfield Service, accounting for 15.19% of the company's total issued ordinary shares [1] Trading Data Summary - On October 22, 2025, total shares held were 823 million, with a decrease of 4.386 million shares [2] - On October 21, 2025, total shares held were 827 million, with an increase of 19.666 million shares [2] - On October 20, 2025, total shares held were 807 million, with an increase of 2.456 million shares [2] - On October 17, 2025, total shares held were 805 million, with an increase of 1.442 million shares [2] - On October 16, 2025, total shares held were 803 million, with an increase of 1.162 million shares [2] Company Overview - Sinopec Oilfield Service Corporation is engaged in providing comprehensive oil and gas engineering and technical services in China [2] - The company operates five divisions: - Geophysical Engineering Division focuses on land and marine geophysical exploration and development technical services - Drilling Engineering Division provides land and marine drilling design, construction, technical services, and drilling equipment - Logging Engineering Division offers engineering contracting and technical services for collecting, monitoring, transmitting, processing, interpreting, and evaluating oil and gas well, geological, and engineering information - Downhole Operations Engineering Division provides petroleum engineering technical services and construction - Engineering Construction Division conducts feasibility studies, design, procurement, and construction for land and marine oil and gas field projects [2]

Core Insights - The concept of "deep earth economy" has emerged and gained traction in the A-share market, attracting investor attention towards related business developments [1] Company Responses - **Boyin Tech**: The company's anti-corrosion and wear-resistant welding technology can be applied to oil and gas transportation pipelines requiring such technologies [1] - **Meiansen**: The company's products and technologies are primarily used for intelligent safety production in various underground mining spaces. They are actively developing mining robots for autonomous inspections in underground spaces, with steady progress in related R&D [1] - **Beilu Intelligent Control**: The company provides intelligent mining-related software and hardware products and solutions, aligning with national policies in the "deep earth economy" sector and seizing related development opportunities [1] - **China Communications Design**: Leading the deep earth future industry within the China Communications Group, the company has formed an innovative consortium focusing on deep geological exploration, ultra-deep shaft construction, and other technical R&D, achieving significant results [1] - **Metro Design**: The company is engaged in surveying, design, planning consulting, and engineering contracting in fields such as rail transit and municipal projects, participating in various urban underground space development projects [1] - **Suyuan Jingshen**: The company is currently focused on key projects related to deep earth development, including the Zhangxing gas storage facility (Phase I) and a joint venture with Jiangsu Guoxin Group for a 600MW compressed air energy storage project [1] Deep Earth Economy Index - The deep earth economy index has shown no change, with several companies experiencing significant stock price increases, such as: - **Deshi Co.**: 16.80% increase - **Keli Co.**: 12.42% increase - **Zhonghua Rock and Soil**: 10.12% increase - **Construction Machinery**: 10.05% increase [2]

证券代码：600871 证券简称：石化油服 公告编号：2025-035 中石化石油工程技术服务股份有限公司 关于 2025 年前三季度对外担保实际发生情况的公告 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： | | 被担保人名称 | | 中石化胜利石油工程有限公司 | | | --- | --- | --- | --- | --- | | | 本次担保金额 | 0.4 | 亿元 | | | 担保对象 | 实际为其提供的担保余额 | 11.68 | 亿元 | | | | 是否在前期预计额度内 | 是 | □否 | □不适用：_________ | | | 本次担保是否有反担保 | □是 | 否 | □不适用：_________ | | | 被担保人名称 | | | 中石化中原石油工程有限公司 | | | 本次担保金额 | 7.65 | 亿元 | | | 担保对象二 | 实际为其提供的担保余额 | 32.21 | 亿元 | | | | 是否在前期预计额度内 | 是 | □否 | □不适用：_________ ...

股票代码：600871 股票简称：石化油服 公告编号：临 2025-034 中石化石油工程技术服务股份有限公司 关于 A 股股票交易异常波动的公告 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。 特别提示： 一、股票交易异常波动的具体情况 公司 A 股股票 2025 年 10 月 20 日、10 月 21 日和 10 月 22 日连续三个交易 日内收盘价格涨幅偏离值累计超过 20%。根据《上海证券交易所交易规则》的有 关规定，属于股票交易异常波动。 二、公司关注并核实的相关的情况 针对公司股票交易异常波动，公司对有关事项进行了自查，并向公司控股股 东及实际控制人中国石油化工集团有限公司发函问询，具体情况核实如下： （一）生产经营情况 目前本公司及控股子公司的生产经营正常，市场环境或行业政策未发生重大 调整，生产成本和销售等情况未出现大幅波动，内部生产经营秩序正常。 （二）重大事项情况 1 （四）其他股份敏感信息 公司未发现其他可能对本公司股价产生较大影响的重大事件；公司董事、监 事、高级管理人员、控股股东及其一致行动人在本次股 ...

格隆汇10月22日｜石化油服发布异动公告，公司A股股票在2025年10月20日、21日和22日连续三个交易 日内收盘价格涨幅偏离值累计超过20%，属于股票交易异常波动。经公司自查，并书面问询控股股东及 实际控制人，截至本公告披露日，确认本公司、本公司控股股东及实际控制人不存在应披露而未披露的 重大信息。截至目前，本公司、本公司控股股东及实际控制人均不存在正在筹划涉及本公司的重大资产 重组、股份发行、重大交易类事项、业务重组、股份回购、股权激励、破产重整、重大业务合作、引进 战略投资者等重大事项。 ...

Core Viewpoint - Sinopec Oilfield Services (600871) has experienced a significant stock price fluctuation, with a cumulative increase of over 20% in the closing price over three consecutive trading days from October 20 to 22, 2025, indicating abnormal trading activity [1] Summary by Sections - **Stock Price Movement** - The company's A-share stock price has shown a cumulative increase of over 20% during the specified trading days, which is classified as abnormal stock trading activity according to the Shanghai Stock Exchange regulations [1] - **Company's Response** - Following the stock price volatility, the company conducted a self-examination and inquired with its controlling shareholder and actual controller, confirming that there are no undisclosed significant information as of the date of the announcement [1] - **Investor Advisory** - The company has advised investors to be cautious of the risks associated with secondary market trading and to make rational investment decisions [1]

Core Viewpoint - Sinopec Oilfield Services (01033) experienced a significant stock price fluctuation, with a cumulative closing price deviation exceeding 20% over three consecutive trading days from October 20 to 22, 2025, indicating abnormal trading activity [1] Summary by Relevant Sections - **Stock Price Movement** - The company's A-share stock price showed a cumulative increase of over 20% during the specified trading days, which is classified as abnormal trading behavior according to the Shanghai Stock Exchange regulations [1] - **Company's Response** - Following the price volatility, the company conducted a self-examination and formally inquired its controlling shareholder and actual controller, confirming that there are no undisclosed significant information as of the date of the announcement [1] - **Investor Advisory** - The company cautioned investors about the recent significant fluctuations in stock trading prices and urged them to be aware of market risks, encouraging rational decision-making and prudent investment [1]

Core Viewpoint - Sinopec Oilfield Service Corporation's A-share stock experienced a significant price fluctuation, with a cumulative increase of over 20% during three consecutive trading days from October 20 to 22, 2025, indicating abnormal trading activity [1] Summary by Relevant Sections - **Stock Price Movement** - The stock price of Sinopec Oilfield Service Corporation (01033.HK) has shown a cumulative increase of over 20% during the trading days of October 20, 21, and 22, 2025, which is classified as abnormal price fluctuation according to the Shanghai Stock Exchange trading rules [1] - **Company's Self-Examination** - Following the price volatility, the company conducted a self-examination and inquired with its controlling shareholder and actual controller, confirming that there are no undisclosed significant information as of the date of the announcement [1] - **Investor Advisory** - The company has advised investors to be cautious of the risks associated with secondary market trading due to the recent significant price fluctuations [1]