... , High yield. Characteristics of QT9-15 type brick making machine:01,High quality. The body use special welding technology ... the host machine can produce different products with different moulds,such as standard bricks,Hollow block,Multi-row perforated ... Aerating-and-conveying System, Feeding System, Molding System, Automatic Stacking System, Hydraulic Pressure System and Electric Control System. ...