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)