Aluminum alloys; Clothes hooks of metal; Door fittings of metal; Furniture fittings of metal; Insect screens of metal; Ladders of metal; Locks of metal, other than electric; Metal staircases; Mobile boarding stairs of metal for passengers; Portable metal free-standing barriers; Portable trade show display booth made primarily of metal; Screws of metal; Shutters of metal; Small items of metal hardware, namely, high security locks and sheet metal plates primarily for the casino and gaming indus...