SEMIPROCESSED PLASTICS AND PLASTIC GOODS, NAMELY, SEMIPROCESSED PLASTICS FOR USE IN SEALING, PACKING AND INSULATING MATERIAL; SEMIPROCESSED PLASTICS AND PLASTIC GOODS, CONSISTING, CONTAINING OR MADE OF PLASTICS IN THE FORM OF BLOCKS, EXTRUDATES, SHEETS, FILMS, RODS, FLEXIBLE PIPES, FIBERS NOT FOR TEXTILE USE AND MOULDED BODIES; THERMOPLASTICS SYNTHETIC RESINS FOR GENERAL INDUSTRIAL USE