Market Overview - The plastic sector experienced a decline of 0.11% on October 31, with Shangwei New Materials leading the drop [1] - The Shanghai Composite Index closed at 3954.79, down 0.81%, while the Shenzhen Component Index closed at 13378.21, down 1.14% [1] Stock Performance - Zhejiang Zhongcheng saw a significant increase of 10.09%, closing at 5.13, with a trading volume of 438,400 shares and a transaction value of 217 million [1] - Xiangyuan New Materials rose by 6.85%, closing at 30.43, with a transaction value of 530 million [1] - The worst performer was Shangwei New Materials, which fell by 9.14%, closing at 105.31, with a transaction value of 1.309 billion [2] Capital Flow - The plastic sector had a net inflow of 22.29 million from institutional investors, while retail investors contributed a net inflow of 266 million [2] - The sector saw a net outflow of 288 million from speculative funds [2] Individual Stock Capital Flow - Cangzhou Mingzhu had a net inflow of 14.4 million from institutional investors, but a net outflow of 88.44 million from speculative funds [3] - Zhejiang Zhongcheng attracted a net inflow of 64.39 million from institutional investors, with a net outflow of 27.14 million from speculative funds [3] - Dongcai Technology experienced a net inflow of 26.22 million from institutional investors, while speculative funds had a net outflow of 54.25 million [3]