... ,GL,PPGI,PPGL,CORRAGATED STEEL SHEET,COMPOSITE BOARD,LIP CHANNEL,ETCweight: 10-14kg/m2, equal to 1/30 brick wall. Thesandwichmaterial:EPS ... .35mm-0.8mm Thickness of sandwich:40-300mm Length:according to customers' requirements Width:wall board:1200,1150,1000,950mm roofing ... Heat insulation and preservation.Thermal conductivity: 0.035W/Mk Steel composite board