Core Viewpoint - Chengdu Huamei Electronics Technology Co., Ltd. experienced a significant stock price fluctuation, with a cumulative closing price increase exceeding 30% over three consecutive trading days from September 1 to September 3, 2025, which is classified as abnormal trading activity according to relevant regulations [1][2]. Summary by Sections Stock Trading Abnormality - The company's stock price increased by over 30% cumulatively during the trading days of September 1, 2, and 3, 2025, indicating abnormal trading activity as per the Shanghai Stock Exchange rules [2][3]. Company Operations - A self-examination by the company confirmed that its production and operational activities are normal, with no significant changes in market environment, industry policies, production costs, or sales [2][3]. Major Events - The company has verified that, apart from publicly disclosed information, there are no undisclosed major events affecting stock prices, including mergers, debt restructuring, or asset injections [3]. Media and Market Rumors - The company found no media reports or market rumors that could significantly impact its stock price during the abnormal trading period [3]. Board of Directors' Statement - The Board of Directors confirmed that, as of the announcement date, there are no undisclosed matters that should have been reported according to the relevant regulations, and no significant information that could affect stock trading prices has been received [3].