航天工程：股票交易异常波动

Core Viewpoint - The company announced that its stock experienced an abnormal trading fluctuation, with a cumulative price increase of 20% over three consecutive trading days, but confirmed that there are no undisclosed significant information affecting the stock price [1] Group 1: Stock Performance - The stock price increased by 20% over three trading days: December 4, December 5, and December 8 [1] - The company identified the trading fluctuation as an abnormal event and conducted a self-examination [1] Group 2: Company Operations - The company confirmed that its production and operational activities are normal [1] - There have been no significant changes in the internal and external operating environment [1] Group 3: Information Disclosure - The company has not discovered any undisclosed information in public media that could significantly impact the stock price [1] - The board of directors confirmed that there are no undisclosed matters or related plans that could affect the stock price [1]