Great Wall Technology: Abnormal fluctuations in stock trading; no undisclosed significant matters that should be disclosed.

Changcheng Technology announced that the company's stock price experienced an abnormal fluctuation, with the cumulative deviation exceeding 20% during the three consecutive trading days from August 10 to August 12, 2026. After the company's self-examination and inquiries with the controlling shareholder and actual controller, as of the announcement date, there are no major events affecting the abnormal price fluctuations, no media reports or market rumors that require clarification, and no undisclosed information that should be disclosed. The company is currently operating normally. Investors are reminded to pay attention to investment risks.