brick making machine QT12-15 1. Germany technology 2. Full automatic PLC control 3. ISO9001 IS014001 CE brick making machine QT12-151. Raw material: crushed stone, sand, cement, dust and coal, fly ash, cinder, slag, gangue, gravel, perlite and other industrial wastes. 2. Applied products: concrete blocks. Solid / hollow / cellular masonry products, paving stones with or without face mix, garden ...