... 3.Professional Manufacturer 4.Reliable Operation QT6-15 Block Making Machine:QT6-15 Automatic Block Making Machine(6 stands for the ... gravel,perlite, and other industrial wastes.Applied Products: concrete blocks, solid/hollow/cellular masonry products, paving stones ... , squares, gardens, landscaping, city constructions, etc.QT6-15 Block Making Machine Features:1)Uses Germany Siemens PLC control ...