Classification Information
Fireclay; Plaster; Clay ash; Clay figurines; Clay sculptures; Grouting compounds; Japanese sliding screens of thin paper (shoji); Non-metal molds for forming cement posts and wall panels for building; Non-metal palisades; Potters' clay; Refractory furnace linings, not of metal; Roofing, not of metal, incorporating photovoltaic cells; Statues of stone; Transportable non-metal recording booths; Works of art of clay
Nonmetallic Building Materials