环保设备板块9月3日跌2.1%，聚光科技领跌，主力资金净流出3401.54万元

Group 1 - The environmental equipment sector experienced a decline of 2.1% on September 3, with 聚光科技 leading the drop [1] - The Shanghai Composite Index closed at 3813.56, down 1.16%, while the Shenzhen Component Index closed at 12472.0, down 0.65% [1] - Notable performers in the environmental equipment sector included 美埃科技, which rose by 6.66% to a closing price of 49.17, and 亚米股份, which increased by 4.67% to 19.06 [1] Group 2 - The net outflow of main funds in the environmental equipment sector was 34.01 million yuan, while retail funds saw a net inflow of 9.70 million yuan [3] - The overall fund flow indicates a mixed sentiment, with speculative funds net inflowing 24.32 million yuan [3]