Zhi Tong Cai Jing·2025-09-19 12:12Group 1 - The core point of the article is that Changfei Optical Fiber and Cable (06869) announced a significant fluctuation in its A-share stock price, with a cumulative increase of over 20% from September 16 to September 18, 2025, indicating abnormal trading conditions [1] - On September 19, 2025, the company's A-share stock closed at the daily limit price, reflecting recent volatility in stock prices and urging investors to be cautious and rational in their investment decisions [1] - The company conducted a self-examination and confirmed that there have been no significant changes in its main business, daily operations, or operating environment compared to previous disclosures, and there are no undisclosed major matters [1] Group 2 - The company noted a rising market interest in optical fiber cable products related to data centers, particularly hollow-core fibers, which are still in the early stages of application and have not yet formed stable sales, pricing, or profit levels [1] - Currently, products related to data centers account for a small proportion of the total global demand for optical fiber cables, and the hollow-core fiber business has not yet had a significant impact on the company's financial data [1]