... , gangue, gravel, perlite, and other industrial wastesApplied Products:concrete blocks, solid/hollow/cellular masonry products, paving stones with ... used in buildings, road pavings, squares, gardens, landscaping, city constructions, etc.BIG FIVE ADVANTAGES OF QGM AUTOMATIC BLOCK MAKING ... , guarantee a reliable and high output production of concrete products..1. Use Germany Siemens PLC control system ...