Soochow Securities·2025-12-12 13:05Core Views - The building materials sector slightly underperformed the overall A-share market in 2025, with a return of 19.62% compared to a -4.85% excess return relative to the Wind All A Index [2][10] - The macro outlook suggests that total policies are expected to strengthen, with physical demand support likely to increase, as emphasized in the December Politburo meeting [2][15][20] - The glass fiber industry is anticipated to see a resonance between traditional and emerging fields, with demand growth expected to remain stable despite a potential slowdown [2][23][45] 2025 Market Review - The building materials sector's performance can be segmented into several phases, with notable periods of underperformance and outperformance against the A-share market [10][12] - The glass fiber sub-sector showed significant excess returns driven by high demand in wind power and thermoplastics [10][12] - The cement sub-sector experienced a boost due to improved domestic demand expectations and effective supply-side discipline [10][12] Macro Outlook - Fixed asset investment in China saw a year-on-year decline of 1.7% from January to October 2025, with infrastructure and real estate investments dropping by 0.1% and 14.7%, respectively [15][19] - The Politburo's focus on expanding domestic demand and optimizing supply is expected to lead to a moderate increase in total policies [15][20] - The anticipated fiscal spending for 2026 is projected to reach 41.62 trillion yuan, a 2.1% increase year-on-year, with a focus on effective investment [20][21] Glass Fiber Industry - The supply shock in the glass fiber industry is gradually being digested, with new capacity expected to be limited in the medium term [23][39] - The effective production capacity for glass fiber is projected to reach 759.2 million tons for roving and 107.7 million tons for electronic fabrics in 2026, representing year-on-year increases of 6.9% and 7.3%, respectively [23][40] - Demand for glass fiber is expected to remain stable, supported by wind power and thermoplastics, despite potential declines in growth rates [45][46] Cement Industry - The cement industry is expected to maintain self-discipline in supply, with a focus on eliminating outdated capacity, which will support profitability [3][20] - The exit of 10,952 million tons of outdated capacity is projected, which will enhance the utilization rate of clinker capacity [3][20] - The profitability of the cement sector is expected to improve in 2026, particularly in regions with significant infrastructure projects [3][20] Glass Industry - The glass industry is experiencing accelerated supply clearance, which is expected to provide price elasticity in 2026 [2][3] - The current state of losses in the industry is likely to drive the closure of high-cost production lines, leading to a potential rebound in prices in the first half of 2026 [2][3] - Long-term policies aimed at curbing disorderly competition are expected to stabilize industry profitability and enhance the competitive advantage of leading companies [2][3]