Kummandla weziseko ezingundoqo zamanzi, ukhetho lwemathiriyeli yemibhobho lubalulekile ekuqinisekiseni ukuhanjiswa kwamanzi okusela ngokukhuselekileyo, okuthembekileyo, nokufanelekileyo. Imibhobho yePolyethylene (PE) iye yavela njengeyona ndawo iphambili kulo mmandla, igqwesa izinto zemveli ezifana nentsimbi, intsimbi, kunye nekhonkrithi....
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