PFA”Tetrafluoroethylene Perfluoroalkoxy ether”, Loaʻa iā ia ka paʻa wela maikaʻi loa, ke ʻano kemika inert maikaʻi loa, ka ikaika dielectric maikaʻi a me ka insulation, ka coefficient friction haʻahaʻa, non-stick etc. He ʻōlinolino ka ʻili a ʻaʻohe pinhole, Hiki ke hoʻohana ʻia nā huahana±260℃wela no ka manawa lōʻihi, hoʻohana nui ʻia ma ke kahua oʻAi-adhesion, ka uhi anti-corrosion a i ʻoleʻāpana huahana hoʻokaʻawale.