Awọn ẹka pataki mẹfa wa ti awọn pilasitik ti a lo nigbagbogbo, polyester (PET polyethylene terephthalate), polyethylene iwuwo giga (HDPE), polyethylene iwuwo kekere (LDPE), polypropylene (PP), polyvinyl kiloraidi (PVC), polystyrene (PS). Ṣugbọn, ṣe o mọ bi o ṣe le ṣe idanimọ awọn…
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