China A-share CPO stocks extend decline; Zhongji Innolight falls over 9%, breaks below 500 yuan

The breadth of the move — losses of 8% or more across several CPO names, not just the headline stock — points to a sector-wide repricing rather than an issue specific to any one company. That matters because co-packaged optics sits directly in the AI data-center networking supply chain, so the group's direction is often read as a proxy for sentiment toward AI infrastructure demand. What's worth watching is whether the selling stays concentrated in CPO-linked names or spreads to the broader optical and semiconductor complex, and whether the weakness persists across sessions or reverses.