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The concept of fiber optics repeatedly strengthens, Yongding Co. rebounds to hit the daily limit and reaches a new all-time high

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Mars Finance News: the fiber-optic concept has repeatedly strengthened. Yongding Co., Ltd. reversed and hit the daily limit, reaching a new historical high, with its total market value exceeding 100 billion yuan. Previously, Tongding Interconnection, Taihe New Materials, and Xinya Electronics also hit the daily limit, while Hangdian Co., Ltd., Sanfu Co., Ltd., Hengtong Optoelectronics, and Zhongtian Technology surged higher. On the news front, driven by massive demand for fiber-optic cables brought by AI computing network construction, the price of optical fiber preform rods—which are the “mother” of fiber-optic manufacturing—has risen rapidly compared with early 2025: the quote for general G.652D optical rod rose by more than 180%; for G.657.A2-type optical rods used for high-density data center cabling, the price per equivalent core-kilometer rose from 22 yuan to 30 yuan, reaching 160 yuan, an increase of nearly 550%. (Cailian Press)
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