Ili ndi bokosi losungiramo makhadi a aluminiyamu apamwamba kwambiri, bokosi lowonetsera lamasewera apamwamba, lomwe limagwiritsidwa ntchito posungira, kuwonetsa, ndikutolera makhadi amasewera, makhadi amasewera.
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.