Ọ na-eji maka na ọkụ ke eferife dị ka obere na-ajụ-sized n'ámá, agbata, blocks, na-eje ije n'okporo ámá, n'ogige ntụrụndụ, wdg Ihe na Njirimara: aluminum alloy kpụrụ oriọna ahu, si mgbochi corrosive electrostatic spraying.
