The Combined Nomenclature (CN), v1:2025
9023 00 80: Instruments, apparatus and models designed for demonstrational purposes, e.g. in education or exhibitions, unsuitable for other uses (excl.
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/kn?id=07469aa8-16e3-44d3-bd95-f5f4a5cf5be9