收评：沪指午后回落收跌0.25%，化学化工、油气资源周期股表现坚挺

Core Viewpoint - The A-share market experienced a collective decline, with major indices falling, while certain sectors such as oil and gas, chemicals, and photovoltaic equipment showed strength due to specific market drivers [1] Market Performance - The Shanghai Composite Index fell by 0.25%, the Shenzhen Component Index decreased by 0.33%, and the ChiNext Index dropped by 0.73% [1] - The North China 50 Index increased by 0.9% [1] - Total trading volume across the three markets was 21,635 billion yuan, a decrease of 308 billion yuan from the previous day [1] - Over 2,700 stocks in the three markets saw gains [1] Sector Performance - The oil and gas extraction and services, chemical industry, traditional Chinese medicine, photovoltaic equipment, power grid equipment, humanoid robots, and non-ferrous metals sectors had the highest gains [1] - Conversely, the liquor, tourism and hotel, retail, cultural media, military equipment, and airport and shipping sectors experienced the largest declines [1] Notable Stock Movements - The chemical sector was boosted by price increase news from international chemical giant BASF, leading to stocks like Jinniu Chemical and Shanshan Co. hitting the daily limit [1] - The photovoltaic equipment sector saw a surge in the afternoon, with GCL-Poly Energy hitting the daily limit; estimates suggest that deploying 100GW of computing power to space annually could create a 5 trillion yuan new market for the photovoltaic industry [1] - Oil and gas resource stocks also strengthened in the afternoon amid ongoing tensions in the Middle East, with Intercontinental Oil and Gas experiencing significant gains [1] - Other active sectors included traditional Chinese medicine, robotics, and PCB concept stocks [1] Declining Stocks - Consumer stocks such as liquor, retail, and tourism failed to maintain their previous day's gains, with stocks like Huangtai Liquor and Baida Group hitting the daily limit down, and Dalian Shengya and Three Gorges Tourism also declining [1]