[Class : 19] Roof Coverings Not Of Meral; Roof Flashing Not Of Metal; Hips For Roofing; Roofing Slates; Roofing Not Of Metal; Building Materials; Natural And Artificial Stone; Cement; Lime; Mortar; Plaster And Gravel; Pipes Of Earthenware Or Cement; Lime; Mortar; Plaster And Gravel; Pipes Of Earthenware Or Cements; Road Making Materials; Asphalt; Pitch And Bitumen; Portable Buildings; Stone Monuments Adn Chimney Pots;