永新光学：股票交易异常波动公告

Group 1 - The core point of the article is that Yongxin Optical announced a significant stock price fluctuation, with a cumulative increase of over 20% in closing prices over three consecutive trading days [2] - The company conducted a self-examination and confirmed with its controlling shareholder and actual controller that there are no undisclosed significant matters as of the announcement date [2]