Polypropylene is a type of polyolefin which is slightly harder vs. polyethylene. It is a commodity plastic with low density and high heat resistance. PP has become a material of choice, especially when you are looking for a polymer with superior strength (e.g., vs Polyamide) in engineering applications or simply looking for cost advantage in blow molding bottles (vs. PET). It is the lightest polymers among all commodity plastics, low density, stress-cracking resistant and the list goes on. It is the second-most widely produced volume plastic after polyethylene. Polypropylene (PP) has excellent chemical resistance and is commonly used in packaging. The Polypropylene Granules are hard and tough and used to make moulded particles. Polypropylene is found in everything from flexible and rigid packaging to fibres for fabrics and carpets and large molded parts for automotive and consumer products.