1.as i-rust engaphantsi komhlaba, ineziphumo ezikhethekileyo. Xa isetyenziselwa ukuphatha umphezulu wensimbi efana negolide, isilivere nobhedu, njl, ukumelana nokunganyangeki kunye nokunamathela kunye ne-shorin efana ne-resin efana ne-resen ingaphuhliswa.
2.Ngamzi-mveliso werabha, isetyenziselwa ukuphatha iifilimu ze-Inorganic ezinjengesilika, i-carbon emnyama, ifayibha yeglasi kunye ne-mica, enokuthi isebenzise ngokufanelekileyo iipropathi zoomatshini kwaye zinxibe ukumelana nerabha.
3. Ishishini lemeyile, linokusetyenziselwa ukugqiba ukugqiba iindwangu kunye nezinto eziluhlaza zeemveliso zeenwele.
