Zheng Xing Xing Ye Ri Bao·2026-01-29 08:58Group 1 - The plastic sector experienced a decline of 2.0% on January 29, with Ping An Electric leading the drop [1] - The Shanghai Composite Index closed at 4157.98, up 0.16%, while the Shenzhen Component Index closed at 14300.08, down 0.3% [1] - Notable gainers in the plastic sector included Wanlangwei Plastic, which rose by 7.52% to a closing price of 45.20, and SDIC, which increased by 6.72% to 52.38 [1] Group 2 - The main funds in the plastic sector saw a net outflow of 401 million yuan, while retail investors had a net inflow of 500 million yuan [2] - Key stocks with significant fund flows included Shenjian Co., which had a net inflow of 24.3 million yuan from main funds, and SDIC, which saw a net outflow of 62.86 million yuan from speculative funds [3] - The overall trading volume for the plastic sector was substantial, with SDIC recording a trading volume of 476,200 shares and a transaction value of 2.494 billion yuan [1][2]