午间涨跌停股分析：64只涨停股、6只跌停股，有色·钨概念活跃，安泰科技2连板，中钨高新涨停

Group 1 - A-shares experienced significant activity with 64 stocks hitting the daily limit up and 6 stocks hitting the limit down on October 28 [1] - The non-ferrous and tungsten sectors were particularly active, with AnTai Technology achieving a consecutive limit up and Zhongtung High-tech also hitting the limit up [1] - The fiberglass sector showed strength, with Honghe Technology reaching the limit up [1] - Fujian state-owned assets concept stocks rose, with Haixia Innovation and Fujian Cement achieving consecutive limit ups, along with HeLiTai and Xiamen Port reaching the limit up [1] Group 2 - *ST Yuan Cheng faced a continuous decline with 12 consecutive limit downs, while *ST Su Wu and ST Huatong experienced 2 consecutive limit downs [2] - Other companies such as *ST HeKe and Shi Long Industrial also hit the limit down [2]