I recently needed to buy a replacement part for my Kona Electric (don't try removing tree sap from the rear door trim panel with rubbing alcohol!) and found this site with a fairly comprehensive catalog of parts: https://www.hyundaioemparts.com/ I wandered around the site looking for the parts we didn't get in the 2019 U.S. model, such as the battery warmer and heat pump. No luck on that, but I did discover that a replacement battery costs $25,420.92. Oh my! Does anyone have any other sites (country specific) for ordering parts? Might be a useful resource to collect.
https://www.hyundaipartsdeal.com/ I like this site for part comparisons, they show detailed parts diagrams. I don't think they ship outside the US