Umugozi w'amashanyarazi hamwe nuyobora umuringa, igice cya kabiri kiyobora, ecran ya XLPE, ecran ya kimwe cya kabiri, imashini yerekana ibyuma bya buri cyuma, uburiri bwa PVC, ibyuma byuma byuma byuma (SWA) hamwe nicyuma cyo hanze cya PVC.Kumiyoboro yingufu aho hateganijwe guhangayikishwa nubukanishi.Birakwiriye kwishyiriraho munsi yubutaka cyangwa mumiyoboro.