和顺石油：股票交易异常波动公告

Group 1 - The core point of the article is that Heshun Petroleum announced a significant stock price fluctuation, with a cumulative increase of over 20% in closing prices over two consecutive trading days [1] - The company conducted a self-examination and confirmed with its controlling shareholder and actual controller that there are no undisclosed significant information apart from what has been disclosed in designated media and the Shanghai Stock Exchange website [1]