Deg tmeddurt n tbanen ed tleɣen n tbanen, anlhag deg uḍḍa n uɣellin, PVC ttɣen-d tneffɣen n waman n waman n waman. Tifṛan-a ttattaɣen tameqqrant-a n tḥudden n yiɣli-nni, dɣa ad yezmer ad tt-id-ten d aɣezzit-nsent. PVC neɣ lluṛidat n polyvinyl, d tameqrant n tmeɣra n tmerwint