Zheng Xing Xing Ye Ri Bao·2026-01-08 08:56Group 1 - The plastic sector experienced a rise of 1.14% on January 8, with Wankai New Materials leading the gains [1] - The Shanghai Composite Index closed at 4082.98, down 0.07%, while the Shenzhen Component Index closed at 13959.48, down 0.51% [1] - Key stocks in the plastic sector showed significant price increases, with Wankai New Materials up 15.16% to 20.36, and Lekai Film up 10.03% to 12.72 [1] Group 2 - The plastic sector saw a net outflow of 986 million yuan from institutional investors, while retail investors contributed a net inflow of 1.026 billion yuan [2] - Notable stocks with significant net inflows from retail investors include Shenjian Co. with a net inflow of 1.31 billion yuan [3] - The overall trading volume for the plastic sector was substantial, with Wankai New Materials achieving a transaction amount of 1.098 billion yuan [1]