Electroacoustic transducers; acoustic diaphragms namely acoustic membranes; graphene-based membrane.

Acoustical insulation; acoustic insulation materials, surface acoustic membrane used for surface soundproofing.

Architectural hardware made of common metals; Articles of metal hardware for architectural purposes; Articles of metal hardware for roofs; Buckles of common metal (hardware); Builders' hardware of common metals; Furniture hardware of metal; Hardware of metal (small); Hardware of metal for doors; Hardware of metal for windows; Hooks (metal hardware); Hooks for slate (metal hardware); Items of metal hardware for use in climbing and mountaineering; Metal door hardware; Metal hardware for buildings; Nozzles of metal (hardware); Pins (hardware); Sleeves (metal hardware); Springs (metal hardware); Springs being metal hardware for upholstery; Track hardware of metal

Drapery hardware; Non-metallic window hardware; Plastic hardware for blinds; Plastic hardware for window covering products; Springs (plastic hardware)

Anti-tarnishing chemicals for windows

coaching [education and training]