6
Metal building materials; Sandwich panels with an outer layer of aluminium and an inner layer of extruded polystyrene; Sandwich panels with an outer layer of aluminium and an inner layer of extruded polystyrene or polyurethane with a spacer made of aluminium sheet
17
Insulating materials; Sandwich panels for the insulation of refrigerating chambers
19
Building materials (non-metallic); Sandwich panels for use in building construction; Threshold and extended sandwich panels; Sandwich panels for use in the manufacture of doors and windows; Sandwich panels with a planar core filled with extruded polystyrene, polyurethane, gypsum plasterboard, mineral wool or corkboard; Slabs, not of metal; Corrugated sandwich panels with an outer layer of polyvinyl chloride; Sandwich panels with an outer layer of polyvinyl chloride and an inner layer of extruded polystyrene; Sandwich panels laminated on one side with an outer layer of polyvinyl chloride and an inner layer of extruded polystyrene; Sandwich panels with decorative elements, with an outer layer of high pressure laminate and an inner layer of extruded polystyrene and polyurethane; Self-adhesive panels of layers of extruded polystyrene and an outer layer of premium quality adhesive; Sandwich panels of wood with an outer layer of plywood and an inner layer of extruded polystyrene and polyurethane; Sandwich panels for use in the field of advertising with outer layers of polyvinyl chloride and an inner layer of extruded polystyrene; Sandwich panels for use in the field of advertising with an outer layer of laminate comprising resin-impregnated layers of paper compacted at high pressure and an inner layer of extruded polystyrene; Sandwich panels with an outer layer of polyvinyl chloride or high pressure laminate and an inner layer of extruded polystyrene or polyurethane with a spacer made of aluminium sheet