Hiking brand extrusion and expanded polystyrene(XPS)thermal
insulation boards are made with polystyrene.Though special
process,the hard expanded board is extruded.There is a sealed and
foamed structure,which is an environmental protection material with
the performances of high-resist compression,waterproof,
moisture-proof,air proof,light weight,anti-corrosion,long service
life and low conductivity factor and so on.