午间涨跌停股分析：92只涨停股、7只跌停股，贵金属板块活跃，白银有色涨停

Group 1 - A-shares experienced significant activity with 92 stocks hitting the daily limit up and 7 stocks hitting the limit down on December 22 [1] - The precious metals sector was notably active, with silver-related stocks reaching the daily limit up [1] - The tungsten concept stocks showed strength, exemplified by Xianglu Tungsten's limit up performance [1] Group 2 - CPO concept stocks also saw an increase, highlighted by Hengtong Optic-Electric hitting the daily limit up [1] - Several stocks achieved consecutive limit up performances, including *ST Ningke with 8 consecutive limit ups and Shengtong Energy with 7 consecutive limit ups [1] - Other notable stocks with consecutive limit ups include Jiamei Packaging (5 out of 7 days), Zhejiang Shibao (5 consecutive), and Luyuan Pharmaceutical (4 consecutive) [1]