| 5509.11 | 000 | Single yarn |
| 5509.12 | 000 | Multiple (folded) or cabled yarn |
| 5509.12 | | Containing 85 % or more by weight of polyester staple fibres: |
| 5509.21 | 000 | Single yarn |
| 5509.22 | 000 | Multiple (folded) or cabled yarn |
| 5509.22 | | Containing 85 % or more by weight of acrylic or modacrylic staple fibres : |
| 5509.31 | 000 | Single yarn |
| 5509.32 | 000 | Multiple (folded) or cabled yarn |
| 5509.32 | | Other yarn, containing 85 % or more by weight of synthetic staple fibres : |
| 5509.41 | 000 | Single yarn |
| 5509.42 | 000 | Multiple (folded) or cabled yarn |
| 5509.42 | | Other yarn, of polyester staple fibres : |
| 5509.51 | | Mixed mainly or solely with artificial staple fibres |
| 5509.51 | 010 | 1 Containing more than 50% by weight of synthetic fibres or synthetic fibres and acetate fibres taken together |
| 5509.51 | 020 | 2 Other |
| 5509.52 | | Mixed mainly or solely with wool or fine animal hair |
| 5509.52 | 010 | 1 Containing more than 50% by weight of synthetic fibres or synthetic fibres and acetate fibres taken together |
| 5509.52 | 020 | 2 Other |
| 5509.53 | | Mixed mainly or solely with cotton |
| 5509.53 | 010 | 1 Containing more than 50% by weight of synthetic fibres or synthetic fibres and acetate fibres taken together |
| 5509.53 | 020 | 2 Other |
| 5509.59 | | Other |
| 5509.59 | 010 | 1 Containing more than 50% by weight of synthetic fibres or synthetic fibres and acetate fibres taken together |
