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