2529.21 | 000 | Containing by weight 97% or less of calcium fluoride |
2529.22 | 000 | Containing by weight more than 97% of calcium fluoride |
2811.11 | 000 | Hydrogen fluoride (hydrofluoric acid) |
28.26 | | Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts |
28.26 | | Fluorides : |
2904.20 | | Perfluorooctane sulphonic acid, its salts and perfluorooctane sulphonyl fluoride |
2904.36 | 000 | Perfluorooctane sulphonyl fluoride |
3824.87 | 000 | Containing perfluorooctane sulphonic acid, its salts, perfluorooctane sulphonamides, or perfluorooctane sulphonyl fluoride |