... 3)capacity:water proofing,fireproofing Item : PU sandwich panelDetails : Polyurethane Sandwich Panel also called PU Sandwich Panel, the up & down ... sheets(ppgi and ppgl), core material is six components Polyurethane glue, it is formed by heating, foaming & laminating ... ,000m2 700,000m2 700,000m2 800,000m2 --Fire resistancebadgoodgoodnormalgood Polyurethane foam sandwich panel(PU Density:40 KGS/M3)