Shale (the Shale) is a sedimentary rock composition is complex, but have a thin page-like or sheet laminated joints, mainly by the deposition of clay formed by the pressure and temperature of rock, but mixed with the debris of quartz, feldspar and other chemicals, according to the composition of mixed materials, can be divided into: calcareous shale, iron shale, siliceous shale, carbonaceous shale, black shale, oil shale, etc. which iron shale may become iron minerals, oil shale can be extracted from oil, black shale can be used as the instructions of oil formation.

The world’s first research and production of shale country is the United States, has been 80 years of history. The world-famous American skyscraper is all using the the ceramsite raw materials was built.

Thus, ceramic market demand is very strong, such broad market prospect.