Ge Long Hui·2025-10-22 10:40Core 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]