Zheng Xing Xing Ye Ri Bao·2025-11-11 08:37Group 1 - The plastic sector experienced a rise of 2.28% on November 11, with Shangwei New Materials leading the gains [1] - The Shanghai Composite Index closed at 4002.76, down 0.39%, while the Shenzhen Component Index closed at 13289.0, down 1.03% [1] - Key stocks in the plastic sector showed significant price increases, with Shangwei New Materials up 20.00% to 130.20, and other notable gainers including Sdik up 9.77% and Tu'en Co. up 9.68% [1] Group 2 - The plastic sector saw a net outflow of 392 million yuan from institutional investors, while retail investors contributed a net inflow of 277 million yuan [2] - The stock performance of major companies showed varied results, with Da Dong Nan experiencing a net inflow of 90.97 million yuan from institutional investors, while Sdik faced a net outflow of 66.22 million yuan from retail investors [3] - Overall, the sector's trading volume and turnover reflected active participation, with significant movements in both institutional and retail investor segments [2][3]