poda yakaoma, iri inorganic yakavharwa neAl2O3 & SiO2 uye yakasarudzika organic organic
kurapwa kuve neese maviri akanaka oparesheni uye yakanaka pigment zvivakwa. iyo
zvigadzirwa zvinoratidza kuchena kwakanaka, kwakakwirira kubwinya, simba guru rekuhwanda, simba rakasimba rekutepa,
yakanakira mamiriro ekunze, yakakwira choko kuramba, kushomeka kwemafuta, kunyorova kwakanaka uye
nyore kupararira mune dzakasiyana masisitimu.