... cost, low labor intensity,low consumption,no pollution, no dust.3.Products: 300×300 mm,400×400mm,500×500mm,600 ... striped brick, expressway, hydraulic engineering slope protection, curb and so on.5.The raw material is cement,stone dust,and gravel, which is very ... cheap and easy to find. Specification3040 Type4050 Type5060 TypeMoulding ...