冶钢原料板块12月17日涨3.44%，大中矿业领涨，主力资金净流入1.97亿元

Core Insights - The steel raw materials sector experienced a significant increase of 3.44% on December 17, with major mining companies leading the gains [1] - The Shanghai Composite Index closed at 3870.28, reflecting a rise of 1.19%, while the Shenzhen Component Index closed at 13224.51, up by 2.4% [1] Funding Flow - On the same day, the steel raw materials sector saw a net inflow of 197 million yuan from main funds, while retail funds experienced a net outflow of 54.11 million yuan [2] - Speculative funds recorded a net outflow of 143 million yuan [2]