Ntle le polasetiki e ka sehloohong, li-additives tsa phetoho ea ho roala, k'hamphani e atolohile ka mafolofolo ho ea tšimong e pharaletseng, ho matlafatsa sehlopha sa lihlahisoa bakeng sa basebelisi ba bangata.
Khamphani e ka fana ka lihlahisoa tsa sefe ea limolek'hule, 6FXY
(2,2-Bis (3,4-dimethylphenyl) hexafluoropropane) le 6FDA (4,4 ′ - (Hexafluoroisopropylidene) diphthalic anhydride).