Sure Filter air Filter are Made in Tokyo Japan by OEM specification. Key features include filter media jointly developed with world-class suppliers to meet the most stringent requirements and ensure high efficiency and maximum lifetime. Sakura Air Filters are manufactured to the highest standard by companies fully accredited to the ISO/TS 16949:2002 Quality Management System. And tested for efficiency, lifetime, pressure drop across media, vibration, impulse, burst strength, and other exacting criteria at our testing laboratory accredited to ISO/IEC 17025:1999 Internation