ST Guangdao: Abnormal stock trading fluctuations, halt trading for verification.

ST Announcement: Due to recent significant fluctuations in the stock price and the high level of investor attention, in order to maintain market order and protect the interests of the majority of investors, the company will conduct an investigation into the abnormal volatility of the stock trading. Upon application, the company's stock will be suspended from trading starting from August 28, 2025, with the suspension period expected to be no more than 5 trading days. The suspension period may be extended depending on the progress of the investigation. The stock will resume trading after the company completes the relevant investigation work and discloses an investigation announcement.