76468914
Nov 12, 2002
Jul 13, 2004
Non-metallic building materials, namely, [ non-metallic rigid pipes for building; ] ceramic, earthenware and porcelain-clay tiles and floor tiles; flagstones, [ roofing slates, bricks, concrete blocks for building; potter's clay as raw material; sandstone bricks and blocks for building; ] non-metal ceramic, earthenware and porcelain-clay floor tiles, floors and paving blocks not of metal
Nonmetallic Building Materials