XPS extruded polystyrene insulation board is based on polystyrene as raw materials by heating and mixed into the catalyst, by extrusion molding of the light sheet, also known as extruded polystyrene board (referred to as XPS). XPS extruded polystyrene board obturator with continuous uniform honeycomb-type structure, its density, water absorption, thermal conductivity and vapor permeability coefficient lower than all other types of plate-type insulating material with good strength, light weight, not breathable, anti-corrosion, anti-aging, and low prices. XPS extruded polystyrene insulation board in Europe and the United States is extremely common insulation materials, in particular, apply to the use of inverted roof insulation technology (upsetdown) insulation of the roofing system, insulation and heating, roads, airports, Square antifreezing insulation, home decoration, air-conditioning duct insulation, thermal insulation in areas such as cold storage. The product applied to the roof insulation layer, regardless of the effect of thermal insulation, ease of construction, the total cost, than the traditional life, such as perlite and other materials more advantages, for a new type of environmental protection and energy saving materials, is currently on the market the most recognized good thermal insulation material.