涤纶长丝价差快速提升，化工产业右侧布局窗口期，化工行业ETF易方达(516570)低费率投资工具备受关注

Fundamental Analysis - The polyester fiber industry chain is experiencing a rapid increase in price differentials between upstream and downstream [1] - Upstream costs are providing stronger support, boosting market sentiment and driving prices of PX, MEG, and PTA higher [1] - In the polyester filament sector, the number of maintenance shutdowns is increasing, leading to a decline in market supply; however, as the year-end approaches, terminal demand is weakening and the operating rate of downstream weaving machines is declining faster [1] - There is potential for price increases in the "golden March and silver April" period as the polyester filament industry is expected to resume operations and replenish inventory after the New Year [1] Industry Trends - The petrochemical industry is a core segment of China's resource-manufacturing re-inflation and is gradually entering a window for layout in the right phase of the industrial fundamentals [1] - Long-cycle fixed asset investment is turning negative, and the capacity cycle is expected to peak, potentially releasing profit space [1] - Policy measures are exceeding expectations; during the "14th Five-Year Plan" period, the implementation of dual control of carbon emissions is gradually revealing capacity ceilings for high-energy-consuming enterprises, benefiting the chemical supply side [1] - The upward trend in overseas demand, coupled with capacity exit, is expected to shift exports from quantity-driven to both quantity and price increases, leading to a revaluation of China's industrial strength [1] - The demand side is benefiting from the transformation of old and new driving forces, with new chemical materials expected to inject elasticity into industrial demand improvement [1] Related Products - The chemical industry ETF E Fund (516570, linked funds: 020104/020105) directly benefits from dual carbon policies and price increases in core segments such as PX-PTA-filament industry, with a latest scale of 1.7 billion [2] Packaging Leaders - A one-click package for leading companies in the petrochemical and basic chemical industries is available [3] Fee Advantages - The combined management and custody fee is only 0.20% per year, significantly lower than similar products, resulting in lower investment costs [4] Elasticity Advantages - The index composition focuses on sub-industries with clear supply-demand improvements, making it sensitive to price increase expectations [5]