A股光纤概念午后走强，通鼎互联、华脉科技午后涨停，仕佳光子涨超12%，博创科技、太辰光、源杰科技跟涨。

Group 1 - The A-share optical fiber sector showed strong performance in the afternoon, with notable stocks such as Tongding Interconnection and Huamai Technology hitting the daily limit up [1] - Shijia Photon experienced a rise of over 12%, indicating significant investor interest [1] - Other companies like Bochuang Technology, Taicheng Light, and Yuanjie Technology also saw upward movement, reflecting a broader trend in the sector [1]