17
Unprocessed and semi-processed rubber, gutta-percha, gum, asbestos, mica and substitutes for all these materials; plastics and resins in extruded form for use in manufacture; plastics and resins in extruded form for use in ground heave, ground heave prevention and ground heave control; packing, stopping and insulating materials; folding polypropylene; polypropylene sheets; flexible pipes, tubes and hoses, not of metal
19
Materials, not of metal, for building and construction; rigid pipes, not of metal, for building; asphalt, pitch, tar and bitumen; bitumen based sealants; tar based sealants; waterproof bituminous membranes; mortar; concrete; cement; plaster; grout; cementitious mixtures; damp course materials (non-metallic-); damp proof membranes of synthetic plastics materials; plastic for use in building; polypropylene sheets for use in building and construction; collapsible plastic for use in ground heave and ground heave prevention, control and protection; ground heave control sheeting or fabric for construction use; geotextiles and plastics for ground heave prevention, control and protection; tile floorings, not of metal; coatings [building materials]; concrete coatings; waterproof coatings [cementitious]; textured coatings [cementitious]; cementitious restorative coatings; anchoring grouts