PP Description: Polypropylene, abbreviated as PP, is a colorless, odorless, non-toxic, translucent solid substance. The chemical formula is (C3H6)n, and the density is 0.89~0.91g/cm3.Polypropylene is a thermoplastic synthetic resin with excellent properties. It has chemical resistance, heat resistance,electrical insulation, high-strength mechanical properties and good high resistance. Grinding performance, etc