... 1320mm thickness:4-120mm High Quality High Quality polystyrene sheets SpecificationsXps Board High Quality polystyrene sheets high density polystyrene 1. HCFC ... advantages, incuding high-resist compression,waterproof,moistureproof,air proof,light weight,anti-corrosion,long service life ... Superior performance make it fit for a wide range of acoustic and thermal insulatingapplications, including roofing, ...