化学纤维板块12月12日涨0.42%，蒙泰高新领涨，主力资金净流出7126.22万元

Group 1 - The chemical fiber sector increased by 0.42% compared to the previous trading day, with Montai High-tech leading the gains [1] - The Shanghai Composite Index closed at 3889.35, up 0.41%, while the Shenzhen Component Index closed at 13258.33, up 0.84% [1] Group 2 - In terms of capital flow, the chemical fiber sector experienced a net outflow of 71.26 million yuan from main funds, while retail funds saw a net inflow of 81.20 million yuan [2] - The net outflow from individual investors amounted to 0.99 million yuan [2]