1) Sandwich Panel 2) Facing Board : MgO board or Fiber Cement board or Galvanized Steel ... 3)Core Material :EPS , XPS ... Sandwich Panel (MOB 155)Specifications1. Facing Board : MgO board or Fiber Cement board or Galvanized Steel ... 1. The panel core is Self Extinguishing Grade , and the Facing Board Fireproof , so ,Sandwich Panel has excellent Fire Resistance capacity ...