Isinyithi, i-welded, iqokobhe letsimbi, kunye nezakhiwo ezenziwe ngentsimbi zizaliswe ngokujula kwe-epoxy resin-bonded mineral casting.
Oku kudala izakhiwo ezidityanisiweyo ezinozinzo lwexesha elide olukwabonelela ngenqanaba eligqwesileyo lokungashukumi kunye nokuqina okuguquguqukayo.
Ikwafumaneka ngezinto zokuzalisa ezifunxa ngemitha