冶钢原料板块12月8日涨1.62%，大中矿业领涨，主力资金净流入1.96亿元

Group 1 - The steel raw materials sector increased by 1.62% on December 8, with Dazhong Mining leading the gains [1] - The Shanghai Composite Index closed at 3924.08, up 0.54%, while the Shenzhen Component Index closed at 13329.99, up 1.39% [1] - Dazhong Mining's stock price rose by 10.01% to 27.92, with a trading volume of 394,500 shares and a transaction value of 1.051 billion yuan [1] Group 2 - The net inflow of main funds in the steel raw materials sector was 196 million yuan, while retail investors experienced a net outflow of 142 million yuan [1] - Dazhong Mining had a main fund net inflow of 198 million yuan, accounting for 18.84% of its total trading [2] - The overall trend showed that while main funds were entering the sector, retail investors were withdrawing, indicating a divergence in investment behavior [2]