The concept of optical fibers continues to strengthen, Chengfei Optical Fiber breaks four trading limits in eight days, setting a new historical high.

The concept of optical fiber continues to strengthen, with Changfei Optical Fiber hitting the daily limit for 8 consecutive days. Shares of Tera Information and Hentong Optoelectronics surged more than 6%, reaching a new historical high. Previously, Huamai Technology and Huiyuan Communication hit the daily limit, with Chengyi Tong, Tongding Internet, Zhongtian Technology, and others following suit.