Matumba athu a aluminiyamu okhala ndi zoperekera ndi abwino kwa zakumwa zamadzimadzi zambiri, kupereka njira yabwino komanso yotsika mtengo yopangira ma CD.Kuchokera ku timadziti ndi zakumwa mpaka mafuta ophikira ndi zinthu zoyeretsera, matumbawa ndi osinthika komanso osinthika kumakampani osiyanasiyana.