Ngoba iqiniso lokuthi i-rivet ye-aluminium blind esibhekisela kuyo manje akuyona yonke i-aluminium, yakhiwe ngegobolondo lezipikili ze-aluminium kanye nenduku yensimbi yekhabhoni, kanti insimbi yekhabhoni inozibuthe, ngakho-ke i-rivet ye-aluminium blind inozibuthe.
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Isikhathi sokuthunyelwe: Ephreli-14-2022