... China 3.Compact structure 4.Highly Quality with Comp hollow brick machine 1.Brief introduction of JKY60-55 manual ... making machine is suitable for producing various solid brick and hollow bricks such as gangue, shale, fly ash, clay. ... bricks should be choosed, solid brick or hollow brick, If is hollow brick, how many holes on the brick. ... our product,please feel free to contact me! hollow brick machine