... Sound-insulation 3.Environmental Long-Lifetime 4.Fast construct Prefab House made by EPS Sandwich Panels (professional manufacturer) Interior/ ... , school, hotel, mall, amusement hall, active barrack, old house reconstruction, residence and workshop. Light Weight Water/Fire Proof EPS ... 120mm it will increase 12m practical area, for 100m2 house, it will increase 4.16m2•Waterproof and damp resistant ...