Germany International Construction Machinery, Building Material Machines, Mining Machines, Construction Vehicles and Equipment Expo is the largest international influence of the world’s strongest construction machinery, building material machinery, mining machinery industry trade fair, held regularly every three years in Munich, Germany. The expo set technology, trade, information, and technical cooperation in one, is expected exhibition…

With the rapid development of building industry, the sand has a big demand for building engineering. The river sand, as a local resource, can not reborn again at a short time with a phenomenon of decreasing of natural sand in the world even no natural sand existing in some area.