Ulwazi

Isithando somlilo sengilazi singenye yezinto ezibalulekile ezisetshenziswa ekukhiqizeni imikhiqizo yengilazi. Umsebenzi wawo ukushisa izinto zokusetshenziswa emazingeni okushisa aphezulu, ukuncibilikisa nokwenza ingilazi. Nasi isingeniso esifushane se-glass furnaces: