The optical fiber concept continued to be strong. Tongding connected 2 boards, Changjin Photonics, Tianfu Communications, Juguang Technology, Changyingtong, and Yuanjie Technology increased by more than 5%.

The optical fiber concept continued to be strong. Tongding connected 2 boards, Changjin Photonics, Tianfu Communications, Juguang Technology, Changyingtong, and Yuanjie Technology increased by more than 5%.