Subheading 290410: Derivatives of Hydrocarbons; Containing Only Sulpho Groups, t … etc.
Subheading 290420: Derivatives of Hydrocarbons; Containing Only Nitro or Only Ni … etc.
Subheading 290431: Derivatives of Hydrocarbons; Perfluorooctane Sulphonic Acid, … etc.
Subheading 290432: Derivatives of Hydrocarbons; Ammonium Perfluorooctane Sulphon … etc.
Subheading 290433: Derivatives of Hydrocarbons; Lithium Perfluorooctane Sulphona … etc.
Subheading 290434: Derivatives of Hydrocarbons; Potassium Perfluorooctane Sulpho … etc.
Subheading 290435: Derivatives of Hydrocarbons; Salts of Perfluorooctane Sulphon … etc.
Subheading 290436: Derivatives of Hydrocarbons; Perfluorooctane Sulphonyl Fluori … etc.
Subheading 290491: Derivatives of Hydrocarbons; Trichloronitromethane (Chlo … etc.