Isanti yequartz yeyona nto ibalulekileyo kwimizi-mveliso yeminerali ekrwada, impahla engeyiyo yekhemikhali eyingozi, esetyenziswa kakhulu kwiglasi, ukuphosa, iiseramikhi kunye nezixhobo ezilahlayo, ukunyibilikisa iferrosilicon, i-metallurgical flux, isinyithi, ulwakhiwo, ishishini lemichiza, iiplastiki, irabha, iibrasives kunye nezinye. ndi...
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