... proof,cold-proof,damp-proof3)Quake-proof,radiationless,High bending strength,Nonabsorbent4. The main technical parameters of the EPS sandwich ... request, less than 25mMaterialsInner is EPS, two sides is Color steel tileStructurethree layers:(1)upper layer is color steel sheet,(2)the ... inner layer is EPSsandwich,(3)the bottom layer is also steel sheetRockwool ...