How is China's polysulfone supply-demand balance shifting through 2025?

How is China's polysulfone supply-demand balance shifting through 2025?
China consumed about 12,250 tons of polysulfone resin in 2022, up 11.3% year-on-year, and the first half of 2023 showed 6,597 tons, up 7.7%. Demand growth is steady, driven by medical devices, water treatment membranes, and food-contact applications. However, domestic production has historically lagged, with imports filling the gap. Starting in 2023, roughly 25,000 tons of new domestic capacity began small-batch supply or commissioning, including projects from Youju New Materials and Shandong Haoran. This wave of capacity is set to transform the market from import-dominated to self-sufficient. The shift is already visible: domestic players are gaining share in standard PSU grades, while high-end PPSU and PESU for aerospace and advanced medical use still rely on Solvay, BASF, and Sumitomo. Expect price pressure on standard grades as local output ramps.