2923 Quaternary ammonium salts and quaternary ammonium bases; Phosphatidylcholine and other phosphoamino lipids, whether or not they have a chemical definition: HS code chinese tariffs

2923 Quaternary ammonium salts and quaternary ammonium bases; Phosphatidylcholine and other phosphoamino lipids, whether or not they have a chemical definition: HS code chinese tariffs

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29231000 -Choline and its salts -Choline and its salts

29232000 -Phosphatidylcholine and other phosphoamino lipids -Phosphatidylcholine and other phosphoamino lipids

29233000 -Tetraethylammonium perfluorooctylsulfonate -Tetraethylammonium perfluorooctylsulfonate

29234000 -Perfluorooctylsulfonic acid, didecyldimethylammonium salt -Perfluorooctylsulfonic acid, didecyldimethylammonium salt

29239000 -Other quaternary ammonium salts and quaternary ammonium bases -Other quaternary ammonium salts and quaternary ammonium bases