Iimpawu zemveliso yeplastiki efakwe ipayipi yensimbi ngaphakathi nangaphandle 1. Ucoceko, olungenatyhefu, olungangcolisi, olungenalo i-microorganism, ukuqinisekisa umgangatho we-fluid 2. Ukuchasana nokugqwala kweekhemikhali, umhlaba kunye ne-marine biological corrosion, ukuchithwa kwe-cathodic 3. Inkqubo yokufakela yinkqubo yofakelo. ekhulile, eluncedo...
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