Explanatory notes
… (ISO) 3824.87 - - Containing perfluorooctane sulphonic acid, its salts, perfluorooctane sulphonamides, or perfluorooctane sulphonyl fluoride 3824.88 - - Containing tetra-, penta-, hexa-, … 3824.92 - - Polyglycol esters of methylphosphonic acid 3824.99 - - Other This heading covers : (A) PREPARED …