午间涨跌停股分析：67只涨停股、2只跌停股，铜箔/覆铜板概念活跃，宏和科技3连板，东材科技3天2板

Group 1 - A-shares experienced significant activity with 67 stocks hitting the daily limit up and 2 stocks hitting the limit down on August 15 [1] - The copper foil and copper-clad laminate sector showed strong performance, with companies like Honghe Technology achieving three consecutive limit ups, and Dongcai Technology achieving two limit ups in three days [1] - The fiberglass sector also saw gains, with Zhongcai Technology and International Composite both hitting the limit up [1] Group 2 - The securities IT sector rose, highlighted by Dazhihui hitting the limit up [1] - Notable continuous limit up stocks included *ST Aowei with 7 limit ups in 8 days, and Dayuan Pump Industry and *ST Huarong with 5 consecutive limit ups [1] - Other stocks with notable performance included Zhejiang Dongri and Tongzhou Electronics with 4 limit ups in 5 days, and Keli Ke with 3 limit ups in 5 days [1] Group 3 - *ST Gaohong faced a decline with 5 consecutive limit downs, while *ST Suwu experienced 2 consecutive limit downs [1]