Ezweni lanamuhla elisheshayo, ukusebenziseka kalula nokuhlukahluka kubalulekile ekupakishweni komkhiqizo. Enye impahla ekhule ngokuthandwa ngenxa yezinzuzo zayo eziningi i-CPET (Crystalline Polyethylene Terephthalate). Kulesi sihloko, sizoxoxa ngamathreyi e-CPET nokusetshenziswa kwawo okuhlukahlukene, izinzuzo, kanye nezimboni