Shakisha amahitamo yacu yujuje ubuziranenge 90 ° inkokora BSP Umugabo 60 ° Intebe / BSPT Ibikoresho byabagabo.Kuboneka muri zinc yashizwemo, Zn-Ni isahani, Cr3, na Cr6 birangira.Hitamo mubyuma bidafite ingese, ibyuma bya karubone, cyangwa ibikoresho byumuringa.