... 2. Full automatic PLC control 3. ISO9001 IS014001 CE brick making machine QT12-151. Raw material: crushed stone, sand, cement, dust ... grass blocks, slope blocks, interlocking blocks etc.3. Applied fields: widely used in buildings, road pavers, squares, gardens, landscaping, city constructions ... x 190mm hollow block 12pcs/mold240 x 115 x 90mm small hollow block 30pcs/mold240 x 115 x 53mm solid brick ...