Daicel : Regarding Trouble at the CO (Carbon Monoxide) Plant

About this update from Daicel Corporation

Daicel Corporation On Sunday, January 11, a malfunction occurred at the CO plant in the Aboshi Plant of our Himeji Manufacturing Plant, resulting in an emergency shutdown. Consequently, production at the acetic acid plant, which uses CO as a raw material, was also halted. The details known as of today are as follows. Details１．Date of OccurrenceSunday, January 11, 2026２．Outline of the MalfunctionMalfunction of the coal slurry feed pump to the gasifier in the CO plant ３．CountermeasuresThe malfunctioning area has been identified. Countermeasures will be implemented during the operational suspension period. ４． Impact on ProductionCO Plant: Approximately 10 days of shutdownAcetic Acid Plant: Approximately 2 weeks of operational suspension ５．Impact on Business PerformanceCurrently under investigation. Should a material impact on financial results be anticipated, we will disclose this separately. 【Contact for Inquiries Regarding This Matter】 〈Customers and Business Partners〉 Acetyl Chemical Marketing, Acetyl BU, Material SBUEmail: [email protected] 〈Shareholders and Investors〉 Corporate Planning & Strategy Office IR Team TEL: +81-3-6711-8120 〈Other〉 Corporate Support Headquarters, Corporate Communication DivisionTEL: +81-3-6711-8121 Email:[email protected]

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