A-share fiber optic concept stocks surged, with Wanlong Optoelectronics and Changyingtong hitting the 20% daily limit. Tongding Interconnect had previously hit the daily limit, while Taicheng Optoelectronics, Tengjing Technology, Deco, Sanwang Commun

2026-08-20

A-share fiber optic concept stocks surged, with Wanlong Optoelectronics and Changyingtong hitting the 20% daily limit. Tongding Interconnect had previously hit the daily limit, while Taicheng Optoelectronics, Tengjing Technology, Deco, Sanwang Communication, and Youlide all rose by more than 10%.