Izindaba Zomkhiqizo
-
Kungakanani okwaziyo ngamaphrofayili egwebu le-PVC
Lapho amaphrofayili egwebu le-PVC ethulwa ngawo-1970, abizwa ngokuthi “ukhuni lwesikhathi esizayo,” futhi ukwakheka kwawo kwamakhemikhali kuyi-polyvinyl chloride.Ngenxa yokusetshenziswa kabanzi kwemikhiqizo eqinile ye-PVC enegwebu eliphansi, ingathatha indawo cishe yonke imikhiqizo eyenziwe ngokhuni.Eminyakeni yamuva nje, i-t...Funda kabanzi
