Fiidiyowgaan wuxuu muujiyaa kiis wax soo saar dhab ah oo ah in lagu carqaladeeyo xaashida 4mm aluminium ah iyadoo la adeegsanayo qalabka Heerarka Heerarka Sare ee Jiuzh. Taarikada aluminium ee dhumucdan ayaa u nugul leexashada, walwalka gudaha, iyo cillad yar inta lagu gudajiro goynta ama maaraynta. Iyada oo loo marayo tikniyoolajiyadda Heerka Sare ee Jiizh, xaashida ayaa dib loogu soo celiyay guri wanaagsan, hubinta xasilloonida howsha wax soo saarka ee ku xiga.