工程机械板块9月12日跌1.4%，恒立液压领跌，主力资金净流出5.17亿元

Market Overview - The engineering machinery sector experienced a decline of 1.4% on September 12, with Hengli Hydraulic leading the drop [1] - The Shanghai Composite Index closed at 3883.69, up 0.22%, while the Shenzhen Component Index closed at 12996.38, up 0.13% [1] Individual Stock Performance - Hengli Drilling (836942) closed at 44.82, up 3.22% with a trading volume of 22,900 lots and a transaction value of 102 million [1] - Xagong Co. (600815) closed at 2.81, up 2.18% with a trading volume of 332,800 lots and a transaction value of 92.98 million [1] - Other notable performers include Wuxin Suizhuang (835174) at 58.73, up 1.89%, and Shanhai Intelligent (002097) at 14.39, up 1.70% [1] Major Decliners - Hengli Hydraulic (601100) closed at 86.97, down 3.10% with a trading volume of 93,300 lots and a transaction value of 816 million [2] - Hangcha Group (603298) closed at 25.24, down 2.92% with a trading volume of 76,700 lots and a transaction value of 195 million [2] - Other significant declines include Tongli Co. (834599) at 20.60, down 2.00%, and Xugong Machinery (000425) at 9.73, down 1.32% [2] Capital Flow Analysis - The engineering machinery sector saw a net outflow of 517 million from institutional investors, while retail investors experienced a net inflow of 265 million [2] - Notable net inflows from retail investors include Shanhai Intelligent (002097) with 53.24 million and Weiman Sealing (301161) with 29.38 million [3] - Conversely, significant net outflows from retail investors were observed in Shanhai Intelligent with -80.09 million and Weiman Sealing with -23.21 million [3]