PCB概念股震荡下挫，中京电子跌9%

Group 1 - The PCB concept stocks experienced significant declines, with Zhongjing Electronics (002579) dropping by 9% [1] - Honghe Technology (603256) fell by over 8%, while Zhongyi Technology (301150) and Yihau New Materials (301176) both decreased by over 7% [1] - Shenghong Technology (300476) and Tongguan Copper Foil (301217) also adjusted downwards [1]