... as outside cover, galvanized steel sheet as inside cover, with EPS in core. Common panel thickness 30mm, 40mm,Model B: pre- ... sheet as outside cover, plywood as inside cover, with EPS foam in core.Common panel thickness 30mm,40mm,Our refrigerated truck ... from fiberglass sandwich panel with PU form in core.Model F: fiberglass sandwich panel ,with polyurethane foam in core as isolated layer.Common ...