<p>It is made of high temperature and high pressure by rocks in the earth's crust. Its main component is calcium carbonate, accounting for 50%. The stone of marble is natural and simple, with privacy pvc fencing in canada fine texture, bright and diverse color, and strong shape. Granite is a stone that is used exclusively as a floor tile. It is cooled and solidified by lava after the volcanic eruption. It consists of quartz, feldspar and mica. The particles inside the granite are even and delicate, and the overall structure is very tight.</p><p> However, some granites contain trace radioactive elements and are not recommended for indoor decoration. Granite is very exterior decorative moulding for screened porches wear-resistant, hard texture, acid and corrosion resistant, not easily deformed, and has a long service life. Slate is generally used for tile roofing. It is mainly composed of chlorite, mica and quartz. The main component is also silica. </p><p>The overall flatness of the slate is good, there will be no large chromatic aberration, and it is very convenient to process. It is often used as a tile for the use of artificial marble, which is made by the name of people. It is generally filled with natural marble and has been subjected to a series of artificial processes to give it the same cost of a wooden deck in backyard Costa Rica characteristics as natural marble, and even better in terms of flexibility than marble.</p>