pu sandwich panel 1.Fireproof 2.Heat Insulating 3.Density:38-42kg/cbm 4.ISO9001:2000 ... villa, kindergarten, model house for apartment, commercial building, remodeling of old structures, warehouse, steel structure house, workshop, work plant, airport, ... , Embossment, Big ribThickness of steel plate0.4-0.8mmHeat Insulating MaterialPU(Polyurethane)Unit Weight of Core Material38-42KG/m3Thickness of ...