... making machine 1.potential industry in the future 2.low invest,high profit 3.professional manufacturer,good service AAC Block Making ... example:coal ash,sand,stone dust and others ),through making the material small for example sand,they can be ... 400-700kg/m3,(according the market in produce ),same as 1/3 of clay brick and 1/5 common ... coefficient is 0.9-0.22W/(mk),the same as 1/4 or 1/5 of clay brick,so ...