The JKY model,JKB model,JKR model are advanced twin-stage vacuum Brick Presses which draw lessons from the developed domestic, abroad experiences and design to make .They are mainly made of high quality steel with features of reasonable structure, sturdy and durability. And they have strong applicability, high efficiency, easy maintenance but lower energy consumption. They are applicable for the production of high-rate hollow bricks with the materials of coal gangue, shale, high-volume fly-ash, urban construction waste, gangue waste, inferior soil.