Foamed polypropylene material (EPP for short) is a highly crystalline polymer with excellent performance. Now with the advancement of production technology, according to different uses, different processes can be used to prepare EPP materials with different density and pore size. Generally, they are closed-cell foam materials, which have excellent shock resistance, energy absorption, heat insulation, and deformation. The post-recovery rate is high, environmental protection, non-toxic and odorless, with good heat resistance, chemical corrosion resistance, oil resistance and degradability.