Core Viewpoint - Mitsui Chemicals and Daicel's subsidiary, Polyplastics, have signed a cooperation agreement for the marketing of engineering plastics ARLEN® and AURUM® starting January 1, 2026, aiming to meet the growing demand in the automotive and electronics sectors [2][3]. Group 1: Cooperation Agreement - The agreement allows Polyplastics to take over marketing responsibilities, including customer engagement and technical support, while Mitsui Chemicals will continue R&D, production, and logistics [2]. - The collaboration aims to leverage Polyplastics' customer network to enhance business growth in high-performance engineering plastics [2]. Group 2: Product Details - ARLEN® is a modified polyamide 6T material known for high heat resistance, low water absorption, and high mechanical strength, suitable for various automotive and electronic components [2]. - AURUM® is a thermoplastic polyimide (TPI) with the highest heat resistance among thermoplastic resins, enabling efficient production through injection molding, applicable in diverse environments such as automotive and industrial applications [3]. Group 3: Future Developments - Daicel announced plans to restructure and potentially take over Polyplastics' engineering plastics business starting April 1, 2026, indicating a strategic shift in their operations [3].