17 Carbon fiber not for textile use; carbon fiber not for textile use in yarn and thread form; chemical fiber not for textile use; chemical fiber yarn and thread not for textile use; semi-worked synthetic plastic as semi-finished products in the form of tubes, bars, hollow bars, blocks, hollow blocks, boards, hollow boards, pellets, hollow pellets, rods, hollow rods, foils, foams, fibers, films, and sheets for use in manufacturing; semi-worked synthetic plastic as semi-finished products containing carbon nanotubes in the form of tubes, bars, hollow bars, blocks, hollow blocks, boards, hollow boards, pellets, hollow pellets, rods, hollow rods, foils, foams, fibers, films, and sheets for use in manufacturing