A股午评：沪指涨0.88%重上4000点 化工板块集体走强

Market Overview - The market experienced a morning rally, with the Shanghai Composite Index rising nearly 1% and surpassing the 4000-point mark, while the Sci-Tech Innovation 50 Index increased by nearly 3% [1][2] - The total trading volume in the Shanghai and Shenzhen markets reached 1.32 trillion yuan, an increase of 188 billion yuan compared to the previous trading day [1][2] Sector Performance - The electric grid equipment sector continued its strong performance, with Moen Electric achieving three consecutive trading limit increases and Baobian Electric hitting a trading limit for the second consecutive day [1][2] - The semiconductor sector saw fluctuations, with Demingli hitting the trading limit and Haiguang Information rising over 10% during the session [1][2] - The chemical sector experienced a surge, with stocks like Batian Co. and Chengxing Co. reaching their trading limits [1][2] - The electrolytic aluminum concept was active, with China Aluminum nearing its trading limit and reaching a 15-year high [1][2] - The gas turbine concept continued to rise, with Triangle Defense hitting a 20% trading limit increase, and other stocks like Chuanqi Power and Weichai Heavy Industry also reaching their trading limits [1][2] Declining Sectors - The tourism sector collectively declined, with ice and snow industry concept stocks leading the drop, and Dalian Shengya hitting the trading limit down [1][2] - The Hainan sector weakened, with Haikou Group hitting the trading limit down and Haima Automobile experiencing a reversal [1][2] Closing Summary - At the close, the Shanghai Composite Index rose by 0.88%, the Shenzhen Component Index increased by 1.39%, and the ChiNext Index also rose by 1.39% [1][2]