YKK

metallic building and construction materials, namely, siding, window frames, windows, door casings, doors, bay windows, ceiling panels, door handles, roofing panels or tiles, gratings, hinges, window and door shutters, window locks, railings and prefabricated buildings

non-metallic building and construction materials, namely, synthetic boards, prefabricated buildings, ceiling panels, building stones, window glass for buildings, panels for buildings, window sashes, windows and doors

venetian blinds