Synthetic filament tow

550111 Fibres; synthetic filament tow, of nylon or other polyamides, of aramids 550119 Fibres; synthetic filament tow, of nylon or other polyamides, of other than aramids 550120 Fibres; synthetic filament tow, of polyesters 550130 Fibres; synthetic filament tow, acrylic or modacrylic 550140 Fibres; synthetic filament tow, of polypropylene 550190 Fibres; synthetic filament tow, of synthetic materials n.e.c. in heading no. 5501