[Class : 19] Building Materials (Non ,Etallic), Levelling And Finishing Mortar, Building Boards,Prefabricated Building Elements With A Wooden Or Light Material Core And Coated With Building Board Or Tin Sheet Metal; Roof Tiles And Coverting; Ceiling Boards, Concrete Element, Intrior And Weather Stripping Boards, Ceramic Plates; Joint Sealing Compounds, Concerte Pipes; Basic Building Materials, Namely Cement Tiles, Putty, Lime, Slack, Sand, Gravel, Rock, Gypsum And Building Mortar; Prefabricated, Movable And Dismountable Houses As Well As Precased Concrete Elements And Refabricated Building Elements Of Other Mineral Substances, All Being Goods Inlcuded In Class 19.