工程机械板块9月4日跌2.93%，恒立液压领跌，主力资金净流出4.09亿元

Market Overview - The engineering machinery sector experienced a decline of 2.93% on September 4, with Hengli Hydraulic leading the drop [1] - The Shanghai Composite Index closed at 3765.88, down 1.25%, while the Shenzhen Component Index closed at 12118.7, down 2.83% [1] Individual Stock Performance - Hengli Hydraulic (601100) saw a significant drop of 7.15%, closing at 86.75, with a trading volume of 137,100 shares and a transaction value of 1.203 billion [2] - Other notable declines included Changling Hydraulic (605389) down 5.88% and Hangcha Group (603298) down 4.32% [2] - In contrast, Weibo Hydraulic (871245) and Yongda Co. (001239) showed slight increases of 1.74% and 0.79% respectively [1] Capital Flow Analysis - The engineering machinery sector experienced a net outflow of 409 million from main funds, while retail investors contributed a net inflow of 315 million [2][3] - Notable stocks with significant main fund inflows included LiuGong (000528) with 19.37 million and Weiman Sealing (301161) with 12.89 million [3] - Conversely, stocks like XuGong Machinery (000425) and Hangcha Group (603298) faced net outflows from main funds [3]