Dị ka mkpa ndị ahịa si dị, dị iche iche nkọwa nke oke ehi ebuli n'elu ikpo okwu ụgbọ ala, oke ehi ebuli hydraulic nyiwe, oke ehi hydraulic ikpo okwu lifts, oke ehi ụgbọ-n'ịnyịnya ikuku ọrụ nyiwe nwere ike ahaziri.Nabata ọhụrụ na ochie ahịa na bia kparita uka.