When it comes to road paver block, there is always a technical problems that trouble most brick making machinery manufacture. Most brick manufacture hope their brick machine to be able to produce very thin but very strong bricks. Burning free concrete block making machine is the most popular machinery now to be used to produce this kind of paver block. Because this kind of raw material can make bricks with thin thickness and high strength. But now most of the brick machine manufacturers due to technical constraints can only achieve a thickness of more than 5 centimeters, otherwise it is difficult to shape.