Mokhoa oa ho roala holim'a metsi o kenyelletsa ho roala ha phofo, Electro-plating, Anodizing, hot galvanizing, electro nickel plating, penta, joalo-joalo ho ea ka litlhoko tsa bareki.Mosebetsi oa ho phekola holimo ke boiteko ba ho thibela kutu kapa ho ntlafatsa ponahalo feela.Ntle le moo, tse ling tsa liphekolo tsena li fana ka thepa e ntlafalitsoeng ea mochini kapa ea motlakase e kenyang letsoho tšebetsong e akaretsang ea karolo.