Hollow block machine is the device for producing various hollow blocks and paver bricks. You can just change different molds for different sizes blocks or bricks on the HBM, then you can produce different blocks and bricks such as: Eco brick, insulating block, hollow block, holes block, solid block; and paver blocks, such as: interlock block, Dutch block, curb; as well as concrete members, dry base brick, planter bricks, fence block for parks, air port and wharf, etc.