Fiber optic concept oscillates and strengthens; Hangdian Stock surges to daily limit.

The concept of fiber optics is shaking and strengthening. Hangdian shares rose by the daily limit, with shares of Fiberhome Communication, Tongding Internet, Beijing Optics, Topsec Information, and Tungsten Cable following suit. On the news front, Guosheng Securities pointed out in a research report that the fiber optics production capacity in the United States is highly concentrated in a few manufacturers such as Corning. One of the core variables of this round of market is that overseas demand is becoming a core driving force, and Chinese fiber optic cable manufacturers are beginning to systematically expand overseas.