Ngwaahịa nke plastik mkpuchi mkpuchi nchara n'ime na n'èzí 1. Ịdị ọcha, nke na-adịghị egbu egbu, nke na-adịghị emetọ, na-abụghị microorganism, na-eme ka mmiri dị mma 2. Nguzogide na corrosion kemịkalụ, ala na mmiri biological corrosion, cathodic disbondment 3. Usoro ntinye bụ tozuru okè, adaba...
GỤKWUO