Single-step gravel, sand and cement and other materials to upgrade to the mixing station at the top of the storage hopper, and then weighing the ingredients until mixing into the material, are by material weight down to form a vertical production process system. It has high production efficiency, low power consumption, high degree of mechanization and automation, compact layout, small footprint and other characteristics; but its more complex equipment, infrastructure investment. It is often used for large permanent mixing station.