... , environmental, high efficiency construction.5. Key Specifications/Special Features:Wall thickness:30,50,75,100,150,200mmMaximum width: 1220mmLength: according ... , lightweight, and environmental protectionPolyphenyl granule in Vanjoin board has good heat-insulation effect and heat lost ratio is far below ... buildingWaterproof and damp resistant,With fireproof feature Magnesium fireproof Wall Panels