Advantages XPS system is that: 1), XPS board has a dense inner surface and closed cell structure. Its thermal conductivity is much lower than the same thickness of EPS, EPS and therefore has relatively better thermal insulation properties. For the same building facades, its thickness can be less than other types of insulation materials. 2), since the closed cell structure of the inner layer. So it has good moisture resistance, in a humid environment can still maintain good thermal insulation properties; suitable for cold storage and other special requirements for building insulation, can also be used for external walls made of brick or stone buildings . 3), XPS board has a good compressive strength, in construction, easy to crack and damage xps extrusion board GB, which attributed to the high compressive strength of XPS boards. 5), poor thermal conductivity xps extruded insulation board, leading to 75 in line with our current promotion of energy efficiency standards, basically belong to EPS insulation material is being phased out. 2, the advantages of XPS insulation system XPS system is that: 1), XPS board has a dense inner surface and closed cell structure. Its thermal conductivity is much lower than the same thickness of EPS, EPS and therefore has relatively better thermal insulation properties. For the same building facades, its thickness can be less than other types of insulation materials.