Plastics in extruded form for use in manufacture; insulating materials, other than for use in building, namely, isolation materials in the nature of graphite felt for ovens, high temperature applications, vacuum furnaces and the photovoltaic industry; flexible pipes, not of metal; components of carbon fibre reinforced composites, not for use in buildings, or for textile use; components of carbon and graphite being semi-finished products, not for use in buildings or textile use, in particular ...