Polyethersulfone Prices Rise 4.5% in China Amid Tight Supply and Strong Demand

Polyethersulfone CFR Shanghai moved higher through March 2026 as tight export availability and stronger downstream procurement supported a firmer market tone. Early March offered cautious spot offers, but mid-month maintenance turnarounds and Chinaplas-driven buying intensified competition for available cargoes. Logistics bottlenecks along the Yangtze River and slower customs clearance late March reduced effective availability, compounded by rising energy and freight costs. Market participants reported a shift from defensive stocking to active buying as buyers sought allocations ahead of expected cost pressures in coming months. Demand across end-use sectors underpinned the March upturn: water treatment and membrane filtration remained robust, driven by municipal ultrafiltration projects and environmental initiatives; healthcare procurement for hemodialysis and medical filtration devices stayed steady; electronics demand stayed at a baseline level. European maintenance and trimmed Japanese exports tightened spot availability, while feedstock and energy costs continued to press upstream production. Outlook points to further gains into summer, supported by membrane and medical device demand and logistics challenges.