Market Performance - The plastic sector increased by 1.55% compared to the previous trading day, with Shangwei New Materials leading the gains [1] - The Shanghai Composite Index closed at 3843.6, up 1.14%, while the Shenzhen Component Index closed at 12571.37, up 2.25% [1] Top Gainers in Plastic Sector - Shangwei New Materials (688585) closed at 87.61, up 10.79% with a trading volume of 206,700 shares and a transaction value of 1.732 billion [1] - Dongcai Technology (601208) closed at 19.40, up 9.98% with a trading volume of 1,260,700 shares and a transaction value of 2.374 billion [1] - Wankai New Materials (301216) closed at 17.32, up 5.61% with a trading volume of 261,900 shares and a transaction value of 444 million [1] Market Capital Flow - The plastic sector experienced a net outflow of 685 million from institutional investors, while retail investors saw a net inflow of 563 million [2] - The overall market showed a mixed trend with significant movements in individual stocks, indicating varied investor sentiment [2] Individual Stock Capital Flow - Dongcai Technology had a net inflow of 306 million from institutional investors, but a net outflow of 15.4 million from retail investors [3] - Shangwei New Materials saw a net inflow of 46.74 million from institutional investors, with retail investors experiencing a net outflow of 31.81 million [3] - Anli Co. (300218) had a net inflow of 11.4 million from institutional investors, while retail investors faced a net outflow of 81.15 million [3]