46 , 48 42 ex 51.01 51.01-50 , 61 , 67 , ex 5401.20 Yarn of continuous man-made fibres , not put up B 68,71,77,78,80 for retail sale : 5403.10 , 20 , ex 32 , ex 33 , 39 , B. Yarn of artificial fibres : yarn of artificial 41 , 42 , 49 filaments , not put up for retail sale , other than single yarn of viscose rayon untwisted or with a twist of not more than 250 turns per metre and single non-textured yarn of cellulose acetate 43 51.03 51.03-10 , 20 ex 5401.10 Yarn of man-made filament , yarn of staple ex 5401.20 artificial fibres , cotton yarn , put up for retail 55.06 55.06-10 , 90 sale 56.06 B 56.06-20 5406.10 , 20