收评：沪指窄幅震荡跌0.12%，轨交设备板块午后走强

Market Overview - The three major A-share indices collectively closed lower, with the Shanghai Composite Index down 0.12%, the Shenzhen Component Index down 0.26%, and the ChiNext Index down 0.38% [1] - The North China 50 Index fell by 1.22%, and the total trading volume in the Shanghai and Shenzhen markets was 173.63 billion yuan, a decrease of 116.2 billion yuan compared to the previous day [1] Sector Performance - Over 2400 stocks in the two markets experienced gains [1] - The engineering machinery, wind power equipment, and rail transit equipment sectors showed strength, while the ERP concept and Huawei Euler sectors faced adjustments [1] Notable Stocks - In the engineering machinery sector, Iron Tuo Machinery and Wuxin Tunnel Equipment both rose over 10%, while Shanhe Intelligent reached the daily limit [1] - The wind power equipment sector saw Feiwo Technology hit the daily limit with a 20% increase [1] - The rail transit equipment sector strengthened in the afternoon, with Jiaoda Iron and Steel rising over 20%, Jin Ying Heavy Industry hitting the daily limit, and Xianghe Industrial also reaching the daily limit [1] - The ERP concept experienced low-level fluctuations, with Dingjie Smart falling over 13% [1] - The Huawei Euler sector weakened, with Saiyi Information and Danghong Technology both dropping over 9% [1]