塑料板块12月11日跌1.23%，道明光学领跌，主力资金净流出5.49亿元

Group 1 - The plastic sector experienced a decline of 1.23% on December 11, with Tomy Optical leading the drop [1] - The Shanghai Composite Index closed at 3873.32, down 0.7%, while the Shenzhen Component Index closed at 13147.39, down 1.27% [1] Group 2 - The net outflow of main funds in the plastic sector was 549 million yuan, while retail funds saw a net inflow of 460 million yuan [2] - Speculative funds had a net inflow of 88.11 million yuan on the same day [2]