Aha ngwaahịa: Profaịlụ Ngwongwo otu nke alumil na-emepụta: 0.8mm elu elu: Osisi anyị na-emeghe bul na-emeghere ya. Anyị na-enye oke mma na nnyefe ngwa ngwa ma na-enye ezigbo profaịlụ nke mkpụrụ osisi alumini anyị nwere ike ịmepụta mkpakọrịta dịka mkpa gị na oge dị elu. Profaịlụ nke aluminom iji mezuo ihe ị chọrọ