... with the froth, gypsum, polywood, aluminium fiberglass sandwich panel, GRP honeycomb panel, FRP insulation panel can be combined with the ... gypsum, polywood, aluminium honeycomb ,the sandwich panels is a more strengthen, better rigidity panel, sandwich panels will be easier to install, the ... wall coarseness will be reduced also. fiberglass sandwich panel, GRP honeycomb panel, FRP insulation panel