午评：沪指半日跌0.44% 工程机械板块涨幅居前

Core Viewpoint - The A-share market experienced a collective decline in the morning session, with the Shanghai Composite Index down by 0.44%, the Shenzhen Component Index down by 0.81%, and the ChiNext Index down by 0.89% [1] Sector Performance Gaining Sectors - The engineering machinery sector led the gains with an increase of 3.72%, totaling a transaction volume of 1,060.41 million hands and a transaction value of 140.15 billion [2] - The wind power equipment sector rose by 2.17%, with a transaction volume of 746.30 million hands and a transaction value of 122.16 billion [2] - The real estate sector saw an increase of 1.57%, with a transaction volume of 3,928.84 million hands and a transaction value of 235.73 billion [2] - The oil and gas extraction and services sector increased by 1.30%, with a transaction volume of 1,591.48 million hands and a transaction value of 87.76 billion [2] - The pharmaceutical commercial sector rose by 1.08%, with a transaction volume of 229.30 million hands and a transaction value of 30.14 billion [2] Declining Sectors - The audio-visual sector experienced the largest decline at -5.21%, with a transaction volume of 620.57 million hands and a transaction value of 114.15 billion [2] - The battery sector fell by 1.90%, with a transaction volume of 1,179.42 million hands and a transaction value of 363.81 billion [2] - The coal mining and processing sector decreased by 1.72%, with a transaction volume of 1,384.12 million hands and a transaction value of 91.63 billion [2] - The gas sector declined by 1.44%, with a transaction volume of 857.21 million hands and a transaction value of 56.91 billion [2] - The energy metals sector saw a decrease of 1.28%, with a transaction volume of 186.52 million hands and a transaction value of 81.01 billion [2]