Floors, namely, synthetic non-metal floors, parts of floors, namely, floor boards, skirting floor boards, door sills, non-metal door steps being stairs; athletic flooring for tennis courts, tracks, race tracks and arenas, all made of non-metallic building materials and for sporting or gymnastic purposes; synthetic and elastic parts of floors, namely, synthetic flooring materials and completion, namely, structural parts and layers for installation and finishing of these, for interior and exter...