Izinto ezisetyenziselwa ukwenza iglasi ziquka malunga ne-70% yesanti kunye nomxube othile wesoda ash, i-limestone kunye nezinye izinto zendalo - kuxhomekeke kwiipropati ezifunwayo kwibhetshi.Xa kusenziwa iglasi yekalika yesoda, icoliweyo, iglasi esetyenzisiweyo, okanye icullet, sisitshixo esongezelelweyo...
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