Natural texture and color,unitive tincture,we can change the color according to designing. Low water absorption,directly used in external decorating. High strength especially bending strength is as high as 3.4 Mpa,firm and durable,not broken easily. High strength in surface,compact and wearable,no pulverization. Low shrinkage(less than 0.5mm/m),no rupture and chap. Good freeze thaw,the compression strength is as high as 10.7 Mpa at 15 cycles of freeze thaw at 20. Low bulk density,less than half of natural stone,consumedly reduce the load to wall. No radioelement,no pollution.