工业级碳酸锂、硫酸等涨幅居前，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 including Xin Yang Feng, Sen Qi Lin, Rui Feng New Materials, China Petroleum & Chemical Corporation, Ju Hua Co., Yang Nong Chemical, China National Offshore Oil Corporation, and Sai Lun Tire [10]. Core Viewpoints - The report highlights significant price increases in industrial-grade lithium carbonate (up 22.06%) and sulfur (up 5.26%), while synthetic ammonia and butanone experienced substantial declines [4][20]. - The report suggests focusing on import substitution, pure domestic demand, and high-dividend opportunities due to the impact of renewed U.S. tariffs and geopolitical tensions affecting international oil prices [6][20]. - The overall chemical industry remains in a weak position, with mixed performance across sub-sectors, influenced by past capacity expansions and weak demand [23]. Summary by Sections Chemical Industry Investment Suggestions - Key products with notable price increases include industrial-grade lithium carbonate, sulfur, and urea, while synthetic ammonia and butanone saw significant price drops [4][20]. - The report emphasizes the importance of focusing on sectors like glyphosate, fertilizers, and high-dividend assets amid a challenging market environment [23][24]. Price Trends and Market Dynamics - The report notes fluctuations in international oil prices, with Brent crude at $65.85 per barrel and WTI at $62.80 per barrel, reflecting a downward trend [6][20]. - The chemical product prices have shown some rebound, but many products still face price declines, indicating a mixed market sentiment [23][24]. Company Focus and Profit Forecasts - The report recommends companies like Jiangshan Co., Xingfa Group, and Yangnong Chemical, which are expected to enter a favorable economic cycle [8][23]. - It also highlights the potential of domestic fertilizer companies to meet local demand, with specific recommendations for companies like Hualu Hengsheng and Xin Yang Feng [23][24].