M'moyo wathu, CPE ndi PVC zimagwiritsidwa ntchito kwambiri. Chlorinated polyethylene ndi zinthu zodzaza ndi polima zokhala ndi mawonekedwe oyera a ufa, zopanda poizoni komanso zopanda kukoma, ndipo zimakhala ndi kukana kwanyengo, kukana kwa ozoni, kukana mankhwala komanso kukana kukalamba. Pa...
Werengani zambiri