YOFC (06869) has issued an announcement stating that its A-share stock experienced cumulative closing price deviations exceeding 20% over three consecutive trading days from February 6, 2026, to February 10, 2026. According to the trading rules of the Shanghai Stock Exchange, this constitutes abnormal stock trading volatility. Following an internal review and correspondence with its largest shareholder, China Huaxin Post & Telecommunication Economy Development Center, the company confirmed that, as of the announcement date, there are no material undisclosed matters requiring disclosure. The company noted recent market attention on rising demand for new fiber optic cable products related to computing data centers, business developments of overseas peers, price fluctuations in the telecom fiber market, and interest in CPO (co-packaged optics) business. Currently, the volume of related fiber optic cables used within and for interconnecting data centers represents a small portion of the global market demand, while overall demand from domestic and international customers for fiber optic products in the telecom market remains stable. The impact of product price fluctuations on the company's future performance will need to be assessed in conjunction with future market conditions and the company's operational situation. YOFC clarified that it is not currently engaged in any CPO-related business. Investors are advised to be mindful of investment risks and to make rational, prudent investment decisions.