1.  introduce： Areated concrete brick (light brick ) is the light and porous buidling material. It has  light keeping temperature cant burn and other advantages . it can be made into many kinds of bricks (for example : 600×200×100, 80×80×180 , 240×115×53, 600×200×125 ) ,they could be used industry building and common building . they are more and more popular in the world .in the future ,they will replace the Clay brick completely .