Ama-layer pads ayisixazululo esifanelekile sokunamathisela amathini, ingilazi namabhodlela e-PET. Iminyaka engaphezu kwengu-30 imininingwane yethu yobuchwepheshe kanye nemikhiqizo yethu ibe nokugunyazwa abadlali ababalulekile emakethe (abakhiqizi bamaphakethi, izihlungi, abaphisi botshwala, njll.). Abangamashumi ayisithupha kubo -abazinze eYurophu, e-Afrika, eMelika Ephakathi nase-Oceania- sebebeke ithemba labo kithi.