BUILDING MATERIALS AND PARTS AND FITTINGS THEREFORE MADE OF STONE, ARTIFICIAL STONE OR RECONSTITUTED STONE, NAMELY, DOOR AND WINDOW SURROUNDS, HEADS, SILLS AND KEYSTONES FOR WINDOWS, QUOINS, PREFABRICATED ARCHITECTURAL COLUMNS, PILASTERS, PORTICOS, CORBELS, BALUSTRADES, PAVING BLOCKS AND STONES, EDGING STONES, BOLLARDS, GATE PIERS, PIER CAPS, COPINGS, CAPPINGS, PLINTH AND STRING COURSES; GARDEN BUILDINGS AND STRUCTURES, NAMELY, GAZEBOS, ORANGERIES AND POOL HOUSES PRIMARILY NOT OF METAL; STATU...