基础化工行业周报：液氯、BDO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, Giant Chemical, and others [8]. Core Viewpoints - The report suggests continued attention to the petrochemical sector, titanium dioxide sector, and tire sector due to recent price increases in products like liquid chlorine and BDO [2][5]. - The report highlights that the chemical industry is entering its best demand season of the year, with specific recommendations for leading companies in various sub-sectors [19]. Summary by Sections Chemical Industry Investment Recommendations - The report emphasizes the importance of focusing on undervalued, high-dividend companies like China Petroleum amid fluctuating oil prices [4][19]. - It notes that the recent geopolitical tensions and demand concerns have pressured international oil prices, which are expected to remain volatile [4][19]. Price Movements of Chemical Products - Significant weekly price increases were observed in liquid chlorine (up 16.84%), sulfuric acid (up 15.15%), and BDO (up 8.11%) [5][17]. - Conversely, products like aniline (down 9.17%) and dichloromethane (down 6.67%) experienced notable price declines [4][17]. Sub-sector Performance - The report identifies that many sub-sectors within the chemical industry have underperformed due to capacity expansions and weak demand, while sectors like tires and upstream mining have exceeded expectations [18][19]. - It suggests that leading companies in specific sub-sectors, such as polyurethane and titanium dioxide, present investment opportunities due to their strong cost advantages and stable competitive landscapes [19]. Market Trends and Outlook - The report indicates that the chemical industry is expected to benefit from improved downstream demand as the peak season approaches, with a focus on companies that are likely to outperform [19]. - It also highlights the potential for valuation recovery among leading companies in various segments, suggesting a favorable investment environment [19].