ST Chengchang: The deviation of the stock price from the three consecutive days has accumulated over 12%, indicating abnormal volatility.

ST Chengchang announced that the closing prices of the company's stock on December 16, 17, and 18, 2025, deviated by more than 12% for three consecutive trading days, which qualifies as abnormal stock trading fluctuation. After verification, the company's previous disclosure information remains unchanged; no major undisclosed information that could affect the stock price through public media reports has been found; the company's operations are normal, and there have been no significant changes in the internal or external environment; the controlling shareholder and actual controller have not disclosed any major undisclosed matters, and they did not buy or sell the company's stocks during the abnormal fluctuation period. The company reminds investors to invest rationally and be aware of risks.