九鼎新材：关于股票交易异常波动的公告

Group 1 - The core point of the article is that Jiuding New Materials announced a significant abnormal fluctuation in its stock price, with a cumulative increase of over 20% in closing prices over two consecutive trading days on December 23 and 24, 2025 [2] Group 2 - The announcement was made on December 24, indicating the company's stock price behavior [2] - The abnormal fluctuation is classified as a deviation in stock price, which may attract regulatory scrutiny [2] - The specific dates of the stock price increase are highlighted as December 23 and 24, 2025 [2]