Izinto zokusetshenziswa kanye nokwakheka kwamakhemikhali Amaqoqo engilazi ebhodlela ngokuvamile anezinhlobo ezingu-7-12 zezinto ezingavuthiwe.Kukhona ikakhulukazi isihlabathi se-quartz, i-soda ash, i-limestone, i-dolomite, i-feldspar, i-borax, i-lead kanye ne-barium compounds.Ngaphezu kwalokho, kukhona izinto ezisizayo ezifana nokucacisa, ama-colorants, i-decolora ...
Funda kabanzi