[Class : 19] Cement; Concrete Slabs; Slabs, Not Of Metal, For Building; Pipes Of Cement, Earthenware Or Sandstone; Paver Blocks; Paving Tiles And Stone; Concrete Blocks; Unprocessed And Semi Processed Stone, Clay, Bitumen Or Concrete; Concrete Building Material; Ready To Use Concrete; Concrete; Concrete Blocks; Cement Mixes; Cement Slabs; Portland Cement; Building Materials [Non Metallic]; Non Metallic Materials For Building And Construction; Autoclaved Aerated Concrete Block (Aac Block); Plaster; Concrete Bricks; Reinforced Concrete; Concrete Building Materials; Building Materials [Non Metallic]; Non Metallic Materials For Building And Construction.