Japanese Domestic Market (JDM) autos are autos built and bought in Japan for that Japanese market place. They aren't exported outside of the country. Even so, eventually, the JDM label has expanded to incorporate vehicles which were bought outside of Japan but less than unique badges or for different amounts https://aristo22109.thelateblog.com/37187492/5-simple-techniques-for-ford-mustang-ecoboost-engine