O principal componente da maioria dos plásticos é um derivado de petróleo bruto ou gás natural.
There are numerous types of plastics, including clear, cloudy, solid color, flexible, rigid, soft, e assim por diante.
Plastic products are frequently made from a polymer resin that has been mixed with a variety of additives. Each additive is important because it is used to provide plastic with targeted optimum properties such as toughness, flexibility, elasticity, cor, or to make it safer and hygienic to use for a specific application (ref).
