The PEI Price Trend remained slightly positive during the first quarter of 2026 as the market showed gradual improvement compared to the previous quarter. While there was no dramatic jump in prices, the overall direction remained upward because of balanced supply, stable production, and steady demand from important industries. Polyetherimide, commonly known as PEI, is widely used in industries such as automotive, electrical and electronics, aerospace, and industrial manufacturing because of its excellent strength and heat resistance. During the quarter, these industries continued their regular purchasing activities, helping maintain a healthy market environment. Since supply remained well managed and production costs stayed mostly stable, the market avoided any major price fluctuations and instead moved at a slow but steady pace.