... waterproof, thermal protection and insulation, structure maintenance adopt EPS (Expanded polystyrene) panel, rock wool, or other insulation color steel sandwich ... 7. High degree of stiffness and light weight 8. Concrete foundation 9. Earthquake and wind resistance 10. Termite proof ... sandwich panel, 0.42mm color steel sheet ,density of polystyrene foam (EPS sandwich panel) is 12kg/m3, Heat Insulated ...