Lowcell H is a supercritical non crosslinked extruded foamed polypropylene(PP) board with closed cell and independent bubble structure. 1.3 times of foaming ratio, density 0.6-0.67g/cm3, thickness 1.0-1.2mm. It has a special three-layer structure made by coextrusion in die head cavity.The upper and lower surface layers are solid polypropylene(PP), and the surface is pressed with frosted lines, which is not easy to be scratched. The middle layer is black and low foaming, which not only takes into account the lightness, but also has high hardness and cushioning.