I-Polybutylene terephthalate (PBT) yiplastiki yobunjineli ecwebe kakhulu. Inokuqhubela phambili okugqwesileyo, ubungakanani obuzinzile, ukugqiba kakuhle komphezulu, ukumelana nobushushu, ukumelana nokwaluphala kunye nokumelana nokutyiwa kweekhemikhali, ngoko ke iphuma...
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