TARIC 3904.61.00.20 — Copolymer of tetrafluoroethylene and trifluoro(heptafluoropropoxy)ethylene, containing 3,2|% or more but not more than 4,6|% by weight of trifluoro(heptafluoropropoxy)ethylene and less than 1|mg/kg of extractable fluoride ions | TariffCodex