国际柴油、燃料油等涨幅居前，建议关注进口替代、纯内需、高股息等方向

Investment Rating - The report maintains a "Buy" rating for several companies in the chemical industry, including Sinopec, China National Offshore Oil Corporation, and others [11]. Core Views - The report highlights significant price increases in international diesel and fuel oil, with recommendations to focus on sectors such as import substitution, pure domestic demand, and high dividend stocks [1][7]. - The report notes that the geopolitical situation in the Middle East has led to a rapid increase in international oil prices, with Brent crude reaching $92.69 per barrel, up 27.88% from the previous week [7][21]. - The report suggests that the chemical industry should look for products deeply affected by the Middle East conflict that are unlikely to recover in the short term [19]. Summary by Sections Chemical Industry Investment Suggestions - The report indicates that international diesel prices increased by 66.38%, fuel oil by 38.73%, and international gasoline by 35.73% [16][19]. - Conversely, industrial-grade lithium carbonate and battery-grade lithium carbonate saw declines of -11.63% and -11.49%, respectively [6][16]. Market Performance - The report provides a comparative performance analysis of the basic chemical sector, which has outperformed the Shanghai Composite Index over various time frames [2][3]. Key Focus Areas - Helium: The report identifies helium as a critical product due to its supply constraints, particularly from Qatar, and suggests related companies such as Guanggang Gas and Jiufeng Energy [8][19]. - Biodiesel: The report anticipates increased demand for biodiesel in Europe due to rising SAF prices and energy security concerns [9][20]. - Agricultural Chemicals: The report predicts a significant cycle for agricultural chemicals due to rising food prices linked to oil price increases, benefiting companies in phosphate and potash fertilizers [20]. Price Trends - The report notes that the PTA market has seen a price increase, with the average price in East China rising to 5396.43 CNY per ton, reflecting a 4.59% increase [34][36]. - The report also highlights a significant rise in polyester filament prices, driven by geopolitical tensions and rising costs [36][37].