... :450-1320mm thickness:4-120mm High Quality High Quality polystyrene sheets SpecificationsXps Board High Quality polystyrene sheets high density polystyrene 1. HCFC and ... foamed structure helps to have many advantages, incuding high-resist compression,waterproof,moistureproof,air proof,light weight ... roofing, wall, freezing plant, floor etc.XPS foam board can also be covered with aluminum or thin ...