River gravel is a natural stone, sand mountains after experiencing the crustal movement of millions of years ago by the ancient river bed uplift generated through the impact of flash floods , water removal process of continuous extrusion , friction, and tens of thousands years of experience from the vicissitudes of evolution . Under normal circumstances, river pebbles in the river where the river bed , different colors , shapes , ranging lying quietly , not much action , that is, if you can not find opportunities, then these river pebbles in the river is a bunch of ordinary stones , useless , but if you understand its role , then he is a philosopher"s stone to riches . Of course, to make the point of river pebbles become inseparable from its carved stone tools: river Sand Pebbles . The river bed of river gravel useless after crushing sand , made for a variety of building materials and road paved standard sand river pebbles Midas touch is secret. Fote river gravel mining machinery crusher after the advent of the promotion was well received and all walks of life . The main reason is Fote river gravel sand making machine has the following advantages : river pebble gravel crusher discharge size is small, uniform grain shape , large capacity , long life hammer , supporting small power , becomes three stage crushing to secondary crushing , process simplification , simple structure , easy maintenance and smooth operation.Scientific management, advanced processing technology and innovative manufacturing theory make Fote Heavy Machinery become the exporting base of hammer crusher manufacturer, pe jaw crusher and famous grinding equipment in China. What Hongxing has done is for the clients and we believe that quality is the best way to develop market. The main chemical composition is silicon dioxide river pebbles , which also contains small amounts of iron , manganese , copper, aluminum , magnesium and other elements , so the color is different. And the natural color of...