1, fireclay is granite or marble, fireclay stone is mainly marble and granite. Marble is mainly used for indoor wet paste or dry hanging, granite is mainly used for outdoor (stone dry hanging curtain wall).

2, the main component of granite is silica, composed of feldspar and should time, and a small amount of mica and trace minerals. Marble is mainly composed of calcium carbonate. Some marbles contain a certain amount of silica, while others do not contain silica.