Kaviri yekupinda flex, inozivikanwawo senge back bared flex, maseketi anochinjika ane imwechete conductor layer asi inogadziriswa kuitira kuti ibvumidze kupinda kune zvakasarudzwa maficha econductor pateni kubva kumativi ese.Nepo rudzi urwu rwedunhu rune mamwe mabhenefiti, iyo yakakosha yekugadzirisa zvinodiwa kuti uwane iyo maficha inodzikamisa kushandiswa kwayo.