¡¾Introduction¡¿ (1). Autoclaved Aerated Concrete (AAC) block and board have become the pillar industry in construction field. China has introduced AAC technology before 40 years, our company is the earliest manufacture the RD institute of Aerated Concrete (AAC) machinery, and our technology has reached the advanced level of Aerated Concrete (AAC) machine industry. (2) . Sales volume and comprehensive indexes of our Aerated Concrete (AAC) equipment are ahead of others in China. (3) . Aerated concrete is characterized by the advantages of light weight, heat preservation, sound isolation, high strength, process able property and so on, (4) . What¡¯s more, the raw materials of AAC are abundant. Especially, it can not only make use of industrial waste residue, improve environmental pollution, and protect tillable field, but also create favorable social and economic benefits to take fly ash as the raw material of AAC block and board. Aerated concrete is the perfect wall material to replace the traditional solid clay brick. (5). For many years, Aerated Concrete (AAC) has always accepted strong supports from the policies about reforming of wall material, tax policies and environment protection policies. Autoclaved aerated concrete (AAC) block and board have become the important part of new-type construction materials, and possess bright development future.