PCB概念股午后持续走强，中一科技20cm涨停

Group 1 - PCB concept stocks are experiencing a strong afternoon rally, with Zhongyi Technology (301150) hitting the 20% daily limit up [1] - Copper Crown Copper Foil (301217) has risen over 10%, while Chuan Yi Technology (002866) and Dawei Shares (002213) previously reached their daily limit up [1] - Shen Nan Circuit (002916) and Jia Yuan Technology are among the top gainers in this sector [1] Group 2 - Dark pool funds are flowing into these stocks, indicating increased investor interest [1]