... decorate Specifications 1. Facing Board : MgO board or Fiber Cement board or Galvanized Steel Sheet .2. Core Material :EPS , XPS , Rockwool or PU .3 ... panel core is Self Extinguishing Grade , and the Facing Board Fireproof , so ,Sandwich Panel has excellent Fire Resistance capacity .2. The Panel ... design , so it is easy to Transport and Installed . magnesium Sandwich Board,Wall material