… Ceramic building bricks, flooring blocks, support or filler tiles and the like. …
Explanatory notes
… these articles are classified according to kind (bricks, tiles, sanitary ware, etc.), and classification is … porcelain, soft porcelain, biscuit porcelain (including parian) and bone china. All these ceramics are almost completely vitrified, hard, and are essentially impermeable (even if …