Nkanelo: Emalembeni ya sweswinyana, PET pulasitiki yi endle nhluvuko lowu hlamarisaka eka ntirho wa swa vutshunguri, yi pfulela tindlela letintshwa to endla switirhisiwa swa vutshunguri na ku paka mirhi. Hi swivumbeko swa yona swo hlawuleka na swipfuno, PET pulasitiki yi hundzuke xihlawuhlawu lexi rhandzekaka eka switirhisiwa swo hambana swa vutshunguri