... webbed wall Most civilized, environmental, high efficiency construction.5. Key Specifications/Special Features:Wall thickness:30,50,75,100,150 ... :Energy-saving, lightweight, and environmental protectionPolyphenyl granule in Vanjoin board has good heat-insulation effect and heat lost ratio is ... and damp resistant,With fireproof feature Magnesium Oxide/MgO board,MgO sandwich panel