The concept of CPO continues to strengthen, with both Guangxun Technology and Tongyu Communication hitting the daily limit up.

The CPO concept continues to strengthen, with both Guangxun Technology and Tongyu Communication hitting the daily (limit up). Companies such as Zhongfu Circuit, Guangku Technology, Hengtong Optic-Electric, Shijia Photonics, Huagong Technology, and Cambridge Technology are also seeing gains.