聚酯产业链有望走出板块性行情，关注化工龙头ETF（516220）

Core Viewpoint - The chemical sector is showing relative strength, with the leading chemical ETF (516220) rising by 1.79% on December 30, driven by price increases in PX and downstream products [1]. Group 1: PX and Downstream Products - PX prices are increasing due to tight supply driven by higher demand for upstream toluene/xylene from overseas refining, leading to a sustained rise in PX prices [2]. - The polyester filament industry has announced self-discipline production cuts to maintain prices, which began on December 24 and will continue to expand leading up to the Spring Festival, with weekly supervision checks in place [2]. Group 2: BOPET and PTA - BOPET prices are stabilizing and rising steadily since December 22, supported by sufficient existing orders and rising raw material costs [3]. - A 3.6 million ton PTA facility in East China reduced its operating load on December 25 due to issues, with the recovery timeline still pending, while other facilities are also undergoing maintenance [3]. Group 3: Polyester Industry Chain Potential - According to analysis from Kaiyuan Securities, the polyester industry chain has strong potential for anti-involution, characterized by nearing the end of capacity expansion, continuous demand growth, high market share among leading companies, and a predominance of private enterprises focused on profit-driven development [3]. - The chemical sector is complex with many sub-sectors and fast rotation, making the leading chemical ETF (516220) a viable option for investors looking to capitalize on opportunities in the chemical sector [3].