1. Shopping malls, ụlọ ọrụ, ụlọ akwụkwọ, ogbo, bank, securities, ọha nche, njem, ụlọ ọrụ na azụmahịa, ọkụ eletrik, omenala, ụlọ ọgwụ, ogige ntụrụndụ, ọdụ ụgbọ elu, ọdụ, stadiums na ndị ọzọ ubi.
2.Ọ nwere ike ịmepụta ya n'ụzọ akaghị aka, n'etiti nke ihuenyo cylindrical nwere nnukwu ọrụ brushing ma nwee ike ibuli elu, oche, kwụgidere, wdg, iji mezuo ihe ndị a chọrọ nke saịtị ahụ ruo n'ókè kasị ukwuu.