17 PLASTIC AND OTHER SYNTHETIC MATERIAL FOR USE AS THERMAL, ACOUSTICAL AND/OR PROTECTIVE INSULATION AGAINST CORROSION FOR SANITARY, HEATING AND AIR CONDITIONING SYSTEMS, NAMELY STRIPS, TAPES, MATS, HOSES, BOARDS, BLOCKS, SHELLS, SEGMENTS, WADDING, PROFILED SECTIONS AND BULK MATERIALS, AND ACCESSORIES THEREFOR, NAMELY PIPE HANGERS, INSULATION SLEEVES AND TAPES, ADHESIVE TAPES, AND CONNECTION HOSES; PREFABRICATED INSULATION OF METAL, PLASTIC AND NON-IRON METALS FOR SANITARY AND HEATING PURPOSES; PLASTIC PIPEWORK FOR INSULATION OF UNDERFLOOR HEATING AND AIR CONDITIONING SYSTEMS; ADHESIVE TAPES FOR USE IN THE BUILDING TRADE