Mitsui Chemicals and Polyplastics, a wholly-owned subsidiary of Daicel, have entered into a contract regarding marketing operations for engineering plastics products, specifically Arlen and Aurum brands developed and sold by Mitsui Chemicals. Under the contract, starting 1 Jan. 2026, Mitsui Chemicals will consign certain marketing operations to Polyplastics. Mitsui Chemicals will continue to handle research and development, manufacturing, logistics and other such business operations for Arlen and Aurum. There are no plans to change commercial distribution or related procedures. The companies plan to explore further opportunities to deepen their collaboration in the future.