Umbhobho ubukhulu bombhobho De, DN, d ф Intsingiselo De, DN, d, ф Uluhlu lomelo olulandelelanayo lwe De -- idayamitha yangaphandle yePPR, umbhobho wePE kunye nombhobho wepolypropylene DN -- Idayamitha yePolyethylene (PVC) umbhobho, umbhobho wentsimbi, intsimbi iplastiki ehlanganisiweyo p...
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