1.equiment small; 2.workers less; 3.easy transportation; 4.can not call in to 3 months cost; 5.motor vibration Single QTJ4-40A Block Making Machine Line raw materials of making brick:stone dust, stone nitrate, construction waste, fly ash, slag, mine tailings, river sand, coal gangue, porcelain granule, lime, carpolite, sandrock and so on. You can choose one or two of them to mix with the cement ...