POLYTETRAFLUOROETHYLENE FILM, NON MICROPOROUS,IN THE FORM OF ROLLS, OF A THICKNESS OF 4 MILS (0.1016MM). IMPERMEABLE TO WATER VAPOUR.

GENERAL INTERPRETATIVE RULES 1 & 6 TEXT TO CODES 3920 & 3920 99 59 50 HARMONISED SYSTEM EXPLANATORY NOTES TO HEADING 3920 APPLICANTS DECLARATION.