PU Sandwich Panels Model: XR40-317-950 Panel width: 950mm Material: PPGI, PU Color: White Grey, Ocean Blue, Red, Grey... as per customer's requirement Thickness of PPGI: 0.4, 0.45, 0.5mm.. etc Thickness of PU core: 40mm, 50mm, 75mm, 100mm, 150mm Density of PU core: 12, 14, 15, 16, 18kg/m3 Delivery time: about 10-15 days subject to order quantity Polyurethane sandwich panel is short to PU sandwich panel. It's up and bottom surface panels are Galvanized or Pre-painted steel sheets, the core material is 5 components polyurethane glue, then form the three parts by heating, foaming and laminating. Polyurethane is the best material for temperature keeping and sound insulation. It is widely used as the wall or roof for cold storage, industrial workshops, public buildings, etc.