Zheng Xing Xing Ye Ri Bao·2025-09-10 08:30Market Overview - The plastic sector experienced a decline of 0.3% on September 10, with Qide New Materials leading the drop [1] - The Shanghai Composite Index closed at 3812.22, up 0.13%, while the Shenzhen Component Index closed at 12557.68, up 0.38% [1] Top Performers in the Plastic Sector - Dongcai Technology (601208) saw a closing price of 18.04, with a significant increase of 7.89% and a trading volume of 729,000 shares, amounting to a transaction value of 1.291 billion [1] - Wankai New Materials (301216) closed at 21.14, up 6.88%, with a trading volume of 371,800 shares and a transaction value of 762 million [1] - Jiangsu Boyun (301003) closed at 36.82, up 5.38%, with a trading volume of 31,800 shares and a transaction value of 115 million [1] Underperformers in the Plastic Sector - Qide New Materials (36600E) closed at 53.71, down 8.81%, with a trading volume of 67,100 shares and a transaction value of 370 million [2] - Dadongnan (002263) closed at 4.14, down 5.48%, with a trading volume of 2,613,900 shares and a transaction value of 1.093 billion [2] - Jinfatech (600143) closed at 17.53, down 4.26%, with a trading volume of 2,258,200 shares and a transaction value of 400.5 million [2] Capital Flow Analysis - The plastic sector experienced a net outflow of 876 million from institutional investors, while retail investors saw a net inflow of 754 million [2] - Major stocks like Dongcai Technology had a net inflow of 1.07 billion from institutional investors, while retail investors had a net outflow of 36.06 million [3] - Wankai New Materials had a net inflow of 1.09 million from institutional investors, with a net outflow of 3.04 million from retail investors [3]