Aerospace Engineering: Abnormal fluctuations in stock trading, shareholder reduction plan not yet completed.

The aerospace engineering announcement stated that the company's stock price has risen by 20% over three consecutive trading days from December 24 to 26, 2025, with a cumulative increase of 108.85% since December 1, which is considered abnormal volatility. The company's latest trailing P/E ratio is 102.27, and P/B ratio is 5.81, significantly higher than the industry average; turnover rate on December 26 was 14.992%, higher than before. The company is not involved in commercial aerospace or related businesses, and current production and operation are normal with no undisclosed significant information. In addition, shareholder Guochuang Group plans to reduce its holdings by up to 16.07 million shares, with the reduction plan not yet completed.