1. Kenyelletso ea thepa ea tšepe e sa hloekang ke mofuta oa lisebelisoa tsa tšepe tse manganga, haholo-holo tse entsoeng ka tšepe, chromium, nickel le lintho tse ling, tse nang le thepa e ntle ea mochine, ho tiea, polasetiki le ho hanyetsa ho bola.Lefi la chromium oxide...
Bala haholoanyane