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Building materials (non-metallic); non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings; monuments, not of metal.
fired and unfired refractory materials including the following: fire-clay brick, pouring pit refractories, refractory mortar, insulating firebrick, refractory castable, refractory plastic, refractory coating, refractory block insulation, ramming refractory, refractory grain, refractory clay, gunning refractory, basic refractories, refractory chrome ore, alumina refractory, silica brick, zircon refractory, zirconia refractory, silicon carbide refractory, refractory shapes, casting compositions, and refractory flour