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Iglasi yobungqina bembumbulu
Iglasi engqina imbumbulu ibhekisa kulo naluphi na uhlobo lweglasi eyakhelweyo ukumelana nokungenwa ziimbumbulu ezininzi. Kwishishini ngokwalo, le glasi ibizwa ngokuba yiglasi enganyangekiyo kwiibhulethi, kuba akukho ndlela inokwenzeka yokudala iglasi ekumgangatho wabathengi enokuba bubungqina obuchasene neebhulethi. Kukho iindidi ezimbini eziphambili zeglasi yobungqina bebhulethi: leyo isebenzisa iglasi elaminethiweyo ebekwe phezu kwayo, kunye naleyo isebenzisa i-polycarbonate thermoplastic.
