XPS foam board,　named as polystyrene extrusion board (XPS for short)has a flawless closed-pore cell structure.　Its density, water absorption,　coefficient of heat conducting and the coefficient of steam pervasion are all lower than those of other board heat preservasion materials and they have the charact eristics of strong intensity,　light material,　airtight,anticorrosion,　aging resistance,　low cost,　etc.　It has been widely used in the fields of heat preservation and heat insulation in the construction industry,　frost resistance of the highway,　railway,　airport,　square and household fitment.　It is generally acknowledged the best heat preservation material in the market at present.
For heat preservation of steel structure workshop, iron sheet house and colored ripple tile.
For making up the heat insulation board in the refrigeration storehouse for cold preservation and and waterproofing.
For laying the bedding under the road bed of the highway for buffering and controlling the frost heating of the ground.
For waterproofing and heat preservation of residential building, office building, the factory wall and roof.
For laying the bedding under the floor for the functions of heat insulation, dampproof and soundproof.
For heat insulation and heat preservation of the ventilation pipeline of central air conditioner.