塑料板块9月2日跌0.57%，东材科技领跌，主力资金净流出5.92亿元

Group 1 - The plastic sector experienced a decline of 0.57% on September 2, with Dongcai Technology leading the drop [1] - The Shanghai Composite Index closed at 3858.13, down 0.45%, while the Shenzhen Component Index closed at 12553.84, down 2.14% [1] - Notable gainers in the plastic sector included Shangwei New Materials, which rose by 14.66%, and Dadongnan, which increased by 10.11% [1] Group 2 - The net outflow of main funds in the plastic sector was 5.92 billion yuan, while retail investors saw a net inflow of 5.64 billion yuan [3] - The table provided details on individual stock performance and trading volumes within the plastic sector [3]