With the development of stone industry, the scraps of stone processing enterprises are more and more, especially the stone powder produced by stone saw cutting. Although adopted circulating water treatment and secondary precipitate, scraps and stone powder piled up days and months multiplying. For long, it is not only waste place, but also causes severe environmental pollution. It has become a big problem for enterprises' long term development. Although it is not long that China stone industry research on the use of stone scrap, China stone practitioners have developed many methods to use stone scraps and stone powder. Using natural granite edging scraps prefabricate into compound granite slab is an advanced technology.

Natural granite is a stone material that can be processed into flooring, wall material and monument. But in granite quarry and processing factory, there is a lot of granite edging scraps abandoned as they can not get effective use every day, causing resources waste.