Introduction of AAC Block: Autoclave Aerated Concrete Block (AAC Block) is the light and porous building material. It has the advantages of Light Weight, Keeping Temperature, Heat Resistant, Fireproof, High Intensity, Good Sound Insulation and Machinability, Conveniently Mechanized Construction, etc. AAC Block can be made into many different size of blocks (for example: 600×200×100, 600×200×125, 80×80×180, 240×115×53, etc), widely used for industry building and common house building. They are becoming more and more popular in the world, in the near future, they will completely replace the Clay Bricks and Normal Concrete Blocks in building construction. Conception of Aerated Concrete Block: The density of common concrete block is around 1600-2400kg/m3, but Aerated Concrete Block is 500kg/m3, 600kg/m3, 700kg/m3. It has not the big grain, mainly made from silicon material, for example: fly ash, sand, cement, quick lime, gypsum and so on. In brief, there are 5 steps to make AAC Block, first, preparing raw material; second, mixing the measured raw material to make slurry and pouring; third, pre-ageing and cutting the green block body; fourth, grouping the cut block and autoclaving; fifth, packing the autoclaved block and transporting out of plant.