5503: Synthetic staple fibres, not carded, combed/o/w processed for spinnin

550310: Staple fibres of nylon or other polyamides, not carded or combed 550320: Staple fibres of polyesters, not carded or combed 550330: Staple fibres of acrylic or modacrylic, not carded or combed 550340: Staple fibres of polypropylene, not carded or combed 550390: Synthetic staple fibres, not carded or combed, nes 5503: Synthetic staple fibres, not carded, combed/o/w processed for spinnin