Natural sand mining cost is higher and higher in recent years, after many years of continuous mining, natural sand resources is rapidly reduced, and at the same time in order to maintain the natural landscape, protection consideration of damming, protect the ecological balance. Place in growing Numbers are beginning to use artificial sand making machine…

In recent years, with the development of situation in the country, a variety of large-scale projects continue, but also increasing the demand for sand and gravel. On the other hand countries in order to regulate the exploitation of resources industry, some large and small polluting production lines, gravel pits be banned,integration,environmental protection, a large gravel…