自动化设备板块12月19日涨0.79%，常辅股份领涨，主力资金净流入2.46亿元

Group 1 - The automation equipment sector increased by 0.79% compared to the previous trading day, with Changfu Co., Ltd. leading the gains [1] - The Shanghai Composite Index closed at 3890.45, up 0.36%, while the Shenzhen Component Index closed at 13140.22, up 0.66% [1] Group 2 - The net inflow of main funds in the automation equipment sector was 246 million yuan, while retail funds experienced a net outflow of 52.53 million yuan [2] - Speculative funds saw a net outflow of 193 million yuan [2]