... building thermal insulation, sound insulation, fire protection, to achieve a high quality, efficient, reliable, safe ... boardMaterialsRockwool, Color steel sheetThicknessColor steel sheet: 0.4-0.8mm Rockwool board: 50mm 75mm 100mmDensity120kg/m3ColorOcean blue, tephrosious ... resistant, green and environmentalUsevarious roofs and walls referring to the large size factory buildings, storages, exhibition ...