Ibyumba bikonje ni ibikoresho bisanzwe bikoreshwa mu bucuruzi kugira ngo ibiryo bikomeze kuba bishya kandi bifite isuku. Ariko, rimwe na rimwe birakora nabi kandi ntibikonje, bigira ingaruka ku ikoreshwa risanzwe. None se, ni izihe mpamvu zishobora gutuma agasanduku k'ibikoresho bikonjeshwa kahagarika gukonja, kandi se byakemurwa gute? Iyi nkuru izatangira...