化学纤维板块9月2日跌2.72%，皖维高新领跌，主力资金净流出4.33亿元

Group 1 - The chemical fiber sector experienced a decline of 2.72% on September 2, with Wanhui High-tech 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] - Major stocks in the chemical fiber sector showed mixed performance, with Haiyue Technology rising by 3.91% and Wanhui High-tech falling by 5.19% [2] Group 2 - The net outflow of main funds in the chemical fiber sector was 433 million yuan, while retail investors saw a net inflow of 232 million yuan [2] - The table of fund flows indicates that Wanhui High-tech had a main fund net inflow of 20.23 million yuan but a significant retail net outflow of 31.05 million yuan [3] - Other stocks like Huayong Chemical and Cai Die Industrial also experienced varying levels of fund inflows and outflows, reflecting investor sentiment [3]