Bokosi lathu losungira makhadi a aluminiyumu ndiye malo abwino osungira makhadi. Itha kukwana makhadi a BGS SGC HGA GMA CSG PSA. Mlandu wa slab wa makadi osungidwa utha kugwiritsidwanso ntchito ngati malo osungira makhadi.
Ndife fakitale yomwe ili ndi zaka 15, yomwe imagwira ntchito kwambiri popanga zinthu zosinthidwa makonda monga zikwama zodzikongoletsera, zodzikongoletsera, milandu ya aluminiyamu, maulendo othawa, etc.