XPS insulation board is extruded polystyrene insulation board, which is based on polystyrene resin as raw material plus other raw materials and polymers, through heating and mixing at the same time injection catalyst, Its scientific name is extruded polystyrene foam for insulation (XPS for short). XPS has a perfect closed cell honeycomb structure, which makes the XPS board has very low water absorption (almost no water absorption), low thermal conductivity, high compression resistance, anti-aging (almost no aging decomposition phenomenon in normal use).