A股收评：沪指涨近1%重返4000点 金属铝、化工板块集体爆发

Market Overview - The Shanghai Composite Index increased by 0.97%, returning to the 4000-point level, while the Shenzhen Component Index rose by 1.73% and the ChiNext Index by 1.84% [1] - The total trading volume in the Shanghai and Shenzhen markets reached 2.06 trillion yuan, an increase of 182.9 billion yuan compared to the previous trading day [1] Sector Performance - The chemical sector experienced a significant surge, with multiple stocks such as Yuntianhua and Chengxing Co. hitting the daily limit [1] - The gas turbine concept stocks continued to rise, with companies like Triangle Defense and Weichai Power reaching the daily limit [1] - The electric grid equipment sector maintained its strong performance, with Moen Electric achieving a three-day limit-up [1] - The electrolytic aluminum sector was active, with China Aluminum, Nanshan Aluminum, and Minfa Aluminum all hitting the daily limit [1] - AI hardware concept stocks saw fluctuations, with Huylv Ecology and Dongshan Precision both reaching the daily limit, and Cambrian Technologies rising over 9% [1] Declining Sectors - The tourism sector faced a collective decline, particularly in the ice and snow industry, with Dalian Shengya hitting the daily limit down [1] - The Hainan sector weakened, with Hainan Airlines reaching the daily limit down [1] Notable Stocks - Key stocks mentioned include Dongshan Precision, Cambrian Technologies, Weichai Power, Minfa Aluminum, Hainan Airlines, Nanshan Aluminum, China Aluminum, Huylv Ecology, Weichai Power, Triangle Defense, Chengxing Co., Yuntianhua, Dalian Shengya, Moen Electric, and Qingshuiyuan [2]