Investment Rating - The industry investment rating is "Positive" and maintained [10] Core Viewpoints - The report emphasizes the impact of the US tariff increase on the building materials sector, suggesting a focus on domestic demand and potential recovery of oversold stocks [5][6] - Cement shipments are showing continuous recovery, while glass inventory continues to decline, indicating a positive trend in the market [6][7] - The report highlights the importance of infrastructure chains under the expectation of increased domestic demand, recommending companies like China Liansu, Huaxin Cement, and Anhui Conch Cement [5][8] Summary by Relevant Sections Basic Situation - Cement: After the Qingming Festival, the national cement enterprise shipment rate is approximately 48%, a 1 percentage point increase month-on-month but a 3 percentage point decrease year-on-year. The national cement price has decreased by 0.2% month-on-month [6][25] - Glass: The price of float glass has seen slight increases, with overall inventory continuing to decline. The production capacity remains stable, and the supply-demand structure is near balance [7][37] Infrastructure and Stock Chains - The report stresses the need to focus on infrastructure chains due to trade friction, recommending companies with strong fundamentals such as Huaxin Cement and Anhui Conch Cement. The demand for building materials is expected to improve in 2025, particularly in the second-hand housing market [5][8] Fiberglass and Wind Power Chains - The fiberglass sector is benefiting from the demand for wind power and thermoplastics, with significant profit growth expected in the first quarter. Companies like China Jushi and Zhongcai Technology are highlighted as key players [8][45]