Granite is usually used in the foundation of wall and outdoor wall decoration because it is not easily affected by metamorphism and weathering, as well as its lustre can maintain more than a century. And due to its hardness and abrasion resistance, granite can also be used in advanced architectural decoration. There are two types of granite, one is China-origin granite, which can be processed in various ways and used in a great many places, mostly for outdoor decoration. The other is granite originated from other countries, usually for design countertop. Granite is of high density, surface hardness and compressive strength, low water absorption, excellent chemical stability and strong durability.