1. Zvimiro zvekutanga zvebhandi rejecha: Mabhandi ejecha anowanzo umbwa nezvinhu zvitatu zvakakosha: Base material, Binder uye abrasives.Base zvinhu: Chigadziko chemucheka, Pepa base, Composite base.Binder: Mhuka guruu, Semi-resin, Yakazara resin, Mvura-inodzivirira pr...
Verenga zvimwe