Polypropylene foam plastic is a low density polypropylene foam material with a dense hole structure. Is a new cushion material that has appeared over the years. Polypropylene micro-propylene foam is strong, resistant to longitudinal pulls according to the size of tight holes and thin pores. And flexible, allowing for excellent flexibility The amount of shock and vibration and the cushioning material is very good, polypropylene foam, microporous polyfoam has a high proportion of 99% volume and a lot of small closed holes, so it is also a good insulation material. But he broke that Stability of light