... panel 2Fast construction 3Anti-earthquake 4Sound insulation 5Low cost Energy-saving low cost prefabricated modular house/sandwich wall panel ... ,eps,fly ash(sand),calcium silicon board. Characteristics:Energy-saving, lightweight, and environmental protectionPolyphenyl granule in Vanjoin board ... and 120mm it will increase 12m practical area, for 100m2 house, it will increase 4.16m2Waterproof and ...