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PET is made of repeating (C10H8O4) models. PET is usually recycled, and has the digit one (♳) as its resin identification code (RIC). The nationwide Affiliation for PET Container assets (NAPCOR) defines PET as: "Polyethylene terephthalate products referenced are derived from terephthalic acid (or dimethyl terephthalate) and mono ethylene glycol,