Guangdong Hongda: During the stock price fluctuation period, the controlling shareholder, Environmental Protection Group, did not engage in any buying or selling of the company's stocks.

Guangdong Hongda announced on September 21st that the company's stock has deviated by more than 20% for three consecutive trading days on September 17th, 18th, and 19th, 2025. According to the relevant regulations of the Shenzhen Stock Exchange, this constitutes abnormal fluctuations in stock trading. After verification, the controlling shareholder and actual controller of the company, Guangdong Environmental Protection Group Co., Ltd., replied: "The current production and operation of our company are normal, and there has been no buying or selling of our company's stock during the abnormal trading period. As of September 19th, there is no significant information that should have been disclosed but was not disclosed." There have been no major changes in the company's operating conditions or internal and external operating environment recently. The information disclosed by the company in the past does not require corrections or supplements, and there is no significant information that should have been disclosed but was not disclosed.