The Combined Nomenclature (CN), v1:2019
4412 33 00: Plywood consisting solely of sheets of wood <= 6 mm thick, with at least one outer ply of non-coniferous wood of the species alder, ash, beech
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/kn?id=ec3af576-673e-42d6-892f-12eb18291831