Fiberglass FRP PU Sandwich Panel , Chiller Box Truck XPS Sandwich Panel is composed of thermosetting plastics and reinforced fiberglass for outer skin panel ,and polyurethane foam as core, better than steel products and aluminum products in specific tenacity. Products in the ultra-low temperature or high temperature will not happen brittle fracture, deformation and to prevent heat transfer. Corrosion products in the environment anti-aging,yellowing resistance,corrosion resistance,friction resistance,easy to clean. Can be instead of aluminum, stainless steel plates, tiles and so on..