Investment Rating - The industry investment rating is maintained at "Outperform the Market-A" [5] Core Viewpoints - The report highlights that major polyester filament manufacturers have initiated a new round of production cuts since late December, with plans to further expand reductions as the Spring Festival approaches, effectively responding to market changes and improving profitability [1][2] - The report anticipates a favorable "golden March and silver April" period, with a projected industry load of around 71%-72% during the Spring Festival, marking a three-year low, and a significant reduction in inventory levels [2] - The overall fundamentals of the filament industry are improving, with supply growth expected to be moderate and demand gradually recovering due to consumption stimulus policies and external factors [3] Summary by Sections 1. Polyester Filament: A Key Link in the Polyester Industry Chain - Polyester filament is a widely used synthetic fiber with characteristics such as durability, elasticity, and resistance to corrosion, widely applied in textiles and various industrial products [14] 2. Industry Self-Regulation and Supply-Demand Dynamics - The polyester filament industry has established a mature self-regulation mechanism, with two rounds of collaborative pricing strategies implemented to stabilize prices and manage production effectively [20][21] - The supply peak has passed, with future capacity additions concentrated in major companies, and the industry is expected to maintain a balanced supply-demand situation through 2026-2027 [27] 3. Sufficient Profit Elasticity and Expectations for "Golden March and Silver April" - The report indicates that polyester filament has strong profit elasticity, with significant profit increases observed during previous upturns, leading to improved profitability for key companies [30]