17
Insulation and barrier articles and materials; Acoustic insulation articles and materials; Thermal insulation articles and materials; Electrical insulation articles and materials; Fire resistant and fire preventive articles and materials; Semi-processed plastics, resins, polymers or synthetic fibres (other than for textile use), or substitutes for these; Unprocessed and semi-processed rubber, gutta-percha, gum, asbestos, mica and substitutes for all these materials; Plastics in extruded form and resins for use in manufacture; Packing, stopping and insulating materials; Non-metallic flexible pipes, tubes and hoses; Parts of the aforesaid goods included in this class
19
Building and construction materials and elements made of sand, stone, rock, clay, minerals and concrete; Unprocessed and semi-processed non-metallic mineral materials such as stone, clay, bitumen or concrete, or substitutes for these; Wood-fibre concrete; Wood-wool cement; Concrete for insulation, including acoustic insulation; Building and construction materials, not of metal; Rigid pipes, not of metal, for building; Asphalt, pitch, tar and bitumen; Buildings, transportable, not of metal; Monuments, not of metal