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On September 19, 2025, the A-share market witnessed a collective decline across its three major indices. The Shanghai Composite Index slipped 0.3%, the Shenzhen Component Index dipped 0.04%, and the ChiNext Index shed 0.16%. The semiconductor sector faced a pullback, with Yijing Optoelectronic tumbling more than 7% and Cambricon plunging over 5%. Meanwhile, robotics concept stocks underwent adjustments, with Kingfa Science and Technology and Wolong Electric Group both hitting their daily downward limits. In contrast, CPO (Co-Packaged Optics) concept stocks showed robust activity. Yangtze Optical Fibre and Cable Company surged to its daily upward limit, while Tianfu Communication and Luxshare Precision rose more than 4%. Additionally, Foxconn Industrial Internet climbed over 2%.
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