6810 Articles of cement, concrete or artificial stone, whether or not reinforced

6810 (01/1988-..) Articles of cement, concrete or artificial stone, whether or not reinforced 68101110 (01/1988-..) Building blocks and bricks, of light concrete with a basis of crushed pumice, granulated slag, etc. 68101190 (01/1988-..) Building blocks and bricks of cement, concrete or artificial stone, whether or not reinforced (excl. of light concrete with a basis of crushed pumice, granulated slag, etc.) 68101900 (01/2011-..) Tiles, flagstones, bricks and similar articles, of cement, concrete or artificial stone (excl. building blocks and bricks) 68101910 (01/1988-12/2010) Roofing tiles of cement, concrete or artificial stone 68101930 (01/1988-12/1993) Wall tiles and paving of cement, concrete or artificial stone, whether or not reinforced 68101931 (01/1994-12/2010) Tiles and paving of concrete, whether or not reinforced 68101939 (01/1994-12/2010) Wall tiles and paving of cement, concrete or artificial stone, whether or not reinforced 68101990 (01/1988-12/2010) Flagstones and similar articles of cement, concrete or artificial stone (excl. building blocks and bricks, roofing tiles, wall tiles and paving) 68102000 (01/1988-12/1995) Pipes of cement, concrete or artificial stone, whether or not reinforced 68109100 (01/2011-..) Prefabricated structural components for building or civil engineering of cement, concrete or artificial stone, whether or not reinforced 68109110 (01/1994-12/2010) Floor components and ceiling components, prefabricated, of cement, concrete or artificial stone, whether or not reinforced 68109190 (01/1994-12/2010) Structural components for building or civil engineering, prefabricated, of cement, concrete or artificial stone, whether or not reinforced (excl. floor components and ceiling components) 68109900 (01/1996-..) Articles of cement, concrete or artificial stone, whether or not reinforced (excl. prefabricated structural components for building or civil engineering, tiles, paving, bricks and the like)