Investment Rating - The industry investment rating is "Positive (Maintain)" [7] Core Views - Oil prices are experiencing fluctuations due to tariff negotiations, OPEC+ production changes, and Middle East tensions. The report emphasizes a focus on leading companies with strong fundamentals and low correlation to oil prices, suggesting bottom-fishing strategies. There is a recommendation to pay attention to domestic demand and opportunities in new material domestic substitution, particularly in the agricultural chemical sector during the spring farming season [14][16]. Summary by Sections 1. Core Views - The report highlights the importance of monitoring oil prices and related inventory levels, with U.S. crude oil commercial inventory at 443.1 million barrels, a weekly increase of 20 barrels. Gasoline inventory decreased by 4.5 million barrels to 229.5 million barrels, while distillate inventory decreased by 2.4 million barrels to 106.9 million barrels [3][16]. 2. Price Changes - Among 188 monitored chemical products, the top three price increases this week were for polymer MDI (up 6.0%), DEG (up 5.7%), and diethanolamine (up 5.7%). The largest decreases were for silicone oil (down 12.9%), DMC (down 11.1%), and natural gas (down 9.5%). Monthly price increases were led by trichloroethylene (up 16.3%), epoxy chloropropane (up 9.2%), and diethanolamine (up 7.7%) [10][17]. 3. Investment Recommendations - Recommended companies include: - Wanhua Chemical: Core product MDI shows recent profit improvement, with upcoming petrochemical and new material projects [14]. - Huangma Technology: A leading special polyether company that has entered a growth phase [14]. - Runfeng Co., Ltd.: A rare company with global formulation registration and sales channels [14]. - Guoguang Co., Ltd.: A leading domestic differentiated formulation company in the plant growth regulator sector [14]. - Hualu Hengsheng: Core product prices are recovering alongside falling coal prices, leading to continuous improvement in price differentials [15].