Polyethylene terephthalate, is the most common thermoplastic polymer resin of the polyester family and is used in fibers for clothing, containers for liquids and foods, and thermoforming for manufacturing, and in combination with glass fiber for engineering resins.

Polyethylene terephthalate is a water-white polymer and is made into fibers, films and sheets, and blow-molding and thermoformed containers for soft drinks and foods. Glass reinforced PET compounds can be injection-molded into parts for automotive, electrical/electronic, and other industrial and consumer products.