Aerated concrete categories based on raw materials, quality, equipment and other characteristics of the process, using different technology of production. Under normal circumstances, will silica sand or fly ash, slag water ground into paste by adding powdered lime, regular cement, plaster and foam, foam stability of the mixing injected box, the lowest density foam curing, cut Specifications block or plate, into custody by the steam autoclave reactor, the high temperature and high pressure steam conservation light of the formation of porous concrete products.