Phetiso ea leseli e phahameng haholo, ponahalo e hlakileng ea kristale e nang le lerootho le tlaase, khanyetso e ikhethang ea tšusumetso e tloaelehileng le mocheso o tlase, ho soeufala ha khatello ea maikutlo, ho tiea le ho phalla ho leka-lekaneng, ho boptjoa hantle, khanya e ntle ea bokaholimo, ho latela RoHS le REACH.