... with EPS foam in core. Common thickness 30mm,40mm,Model D: Aluminum sheet as outside cover, galvanized steel sheet ... or plywood in core. Common panel thickness 30mm,40mm,Model E: Aluminum sheet as outside cover, plywood as ... from fiberglass sandwich panel with PU form in core.Model F: fiberglass sandwich panel ,with polyurethane foam in ... Mounted cooling system or underneath frozen unit truck container