Market Overview - On September 1, the plastic sector experienced a slight decline of 0.04%, with Meilian New Materials leading the drop [1] - The Shanghai Composite Index closed at 3875.53, up 0.46%, while the Shenzhen Component Index closed at 12828.95, up 1.05% [1] Stock Performance - Notable gainers in the plastic sector included: - Haizheng Biomaterials (688203) with a closing price of 16.66, up 20.03% on a trading volume of 124,500 shares [1] - Wankai New Materials (301216) closed at 18.07, up 6.29% with a trading volume of 289,400 shares [1] - Xingye Co., Ltd. (603928) closed at 18.49, up 5.96% with a trading volume of 262,200 shares [1] - Conversely, Meilian New Materials (300586) saw a significant decline of 14.83%, closing at 11.54 with a trading volume of 1,083,000 shares [2] Capital Flow - The plastic sector experienced a net outflow of 537 million yuan from institutional investors, while retail investors saw a net inflow of 384 million yuan [2] - The table of capital flow indicates that major stocks like Dadongnan (002263) and Weike Technology (301196) had varying levels of net inflow and outflow from different investor types [3]