Changfei Optic: Stock trading fluctuation abnormality, no undisclosed significant information requiring disclosure.

Changfei Optic Fiber announced that the company's stock price has deviated by more than 20% for three consecutive trading days from March 24 to March 26, 2026, indicating abnormal fluctuations. After self-inspection and confirmation with major shareholders, as of the announcement date, the company and major shareholders do not have any significant undisclosed information, normal business operations are being carried out, and directors, executives, and major shareholders have not bought or sold company stocks during this period. The company reminds investors to pay attention to the risks of trading on the secondary market and to rely on designated channels for information disclosure.