Polyurethane insulation board advantages: high thermal conductivity due to the polyurethane insulation blowing agent is much lower than that of air (good insulation properties), xps extruded sheet, so rigid polyurethane foam insulation performance is better than just air-containing materials, such as those: mineral wool, fiberglass and polystyrene. 3), the combustion performance is poor, xps extrusion board offer, EPS material cause it has been in the level of abnormality, xps extrusion board company, the fire Beijing radio station because EPS is very low due to the combustion performance. 4), is not environmentally friendly, EPS is not environmental protection in the production process, would exclude a lot of waste and gas, have a great impact on the surrounding environment. 5), poor thermal conductivity, resulting in non-compliance with our current promotion of 75 energy efficiency standards, basically belong to EPS insulation material is being phased out. Building roof insulation, steel roofing, building wall insulation, building ground moisture, the square ground, ground frost heave control, central air conditioning and ventilation pipes.