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YENZIWA NJANI IGLASI EVUNYIWEYO ?
UMark Ford, umphathi wophuhliso lwemveliso kwi-AFG Industries, Inc., uyacacisa: Iglasi epholileyo yomelele ngokuphindwe kane kuneglasi "eqhelekileyo," okanye i-annealed. Kwaye ngokungafaniyo neglasi efakiweyo, enokuthi iqhekezeke ibe ziingceba ezijijekileyo xa yophukile, iglasi epholileyo ...Funda ngokugqithisileyo
