Pa610 bhurashi waya, ine diki density, diki yekunyudza mvura, kuramba kune yakasimba alkali uye isina kusimba asidhi, abrasion kuramba uye kuneta kuramba, nezvimwewo, inoshanda kune akasiyana mabhurashi emaindasitiri, akadai se: michero nemiriwo yekuchenesa brashi roll, girazi. polishing brashi, nezvimwewo, alth...
Verenga zvimwe