... and decorate Specifications 1. Facing Board : MgO board or Fiber Cement board or Galvanized Steel Sheet .2. Core Material :EPS , XPS , Rockwool or PU ... 1220mm.5. Application : Wall , Roof , Partition .Characteristics 1. The panel core is Self Extinguishing Grade , and the Facing Board Fireproof , so ,Sandwich ... , so it is easy to Transport and Installed . magnesium Sandwich Board,Wall material