FDA Registration European (CE) Certification Everything from fabric to production is made in Korea. A safe quadruple structure, excellent fit with a coil frame, and prevention of misting Ergonomic structure out of reach High Elastic Earband KF94 what?? (Korea filter) It can never be made in another country. Watch out for fake things. KF94 has been recognized all over the world as a quarantine mask against infectious diseases as well as fine dust.