Classification Information
Floorboards; Stones; Decorative aquarium stones; Decorative centerpieces of stone, concrete, marble; Glass bricks; Glass panes; Non-precious stones for garden or ornamental use; Rock crystal; Stone for building and construction; Stone for carving mantels, columns and banisters; Stone roofing tiles; Stone sculptures; Stone slates; Stone veneers; Wood rafters; Wood sheets for arts and crafts; Wood siding; Wood sports floors; Wood tar; Wood tile floors; Wood trim; Wood, semi-worked; Works of art of clay; Works of art of stone, concrete or marble
Nonmetallic Building Materials