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