基础化工行业周报：天然气、氧化铝等涨幅居前，建议继续关注石化板块、钛白粉板块和轮胎板块

Investment Rating - The report maintains a "Buy" rating for several companies in the chemical industry, including China Petroleum, Sinochem, and others [5]. Core Viewpoints - The report suggests focusing on undervalued high-dividend stocks like China Petroleum due to the recent drop in oil prices, which are influenced by geopolitical tensions and market expectations [3][18]. - The chemical industry is expected to enter its peak demand season, with specific recommendations to pay attention to leading companies in various sub-sectors that exhibit strong cost advantages and stable competitive landscapes [20]. Summary by Sections Chemical Industry Investment Recommendations - The report highlights the recent decline in international oil prices, with WTI at $69.49 per barrel and Brent at $73.10 per barrel, down 3.19% and 3.88% respectively [3][21]. - It emphasizes the potential for profit recovery in refining companies like China Petroleum as cost pressures ease [3][18]. Price Movements - Significant price increases were noted for natural gas (up 15.58%), sulfur (up 9.09%), and aluminum fluoride (up 4.98%), while PET chips saw a substantial decline of 16.27% [2][19]. - The report indicates that many chemical sub-sectors have underperformed due to capacity expansions and weak demand, but some sectors like tires and upstream mining have exceeded expectations [20]. Focus on Leading Companies - The report recommends investing in leading companies within specific sub-sectors, including Wanhua Chemical in polyurethane, Hualu Hengsheng in coal chemical, and Longbai Group in titanium dioxide [20]. - It identifies a "triple bottom" investment opportunity in certain leading companies, suggesting a favorable outlook for their valuations [20]. Market Trends - The report notes that the chemical industry is entering its best demand season, with a focus on companies that can leverage their scale and cost advantages [20]. - It highlights the importance of monitoring geopolitical developments and their impact on oil prices, which could influence the broader chemical market [21][22].