Stock trading abnormal volatility, there are no undisclosed matters that should be disclosed.

Huagong Technology announced that the company's stock has experienced abnormal fluctuations for three consecutive trading days on May 18th, May 19th, and May 20th, 2026, with a cumulative deviation of over 20%. After self-examination, the company found no need to correct or supplement previous disclosures, no undisclosed major information that could affect stock prices from media reports, normal operating conditions, unchanged internal and external environments, and no undisclosed matters for the company, controlling shareholders, or actual controllers to disclose. During the abnormal fluctuation period, related personnel did not engage in buying or selling the company's stock.