New Technology Plastics distributes Polypropylene in sheet and rod. Polypropylene is available in both natural and white for the high-purity chemical tank fabrication industry. Polypropylene is a semi crystalline thermoplastic manufactured by the catalytic polymerization of propene. Polypropylene belongs to the group of polyolefins. Polypropylenes (PP) are universal standard plastics with well-balanced properties, providing excellent chemical resistance, high purity, low water absorption and good electrical insulating properties. In addition, PP material is light weight and weldable.