The process includes brick machines + manual stacking bricks + samll tunnel dryer + hoffman kiln.the auto brick machines are to crush clay ,mix clay extruder wet bricks.and then workers manual stack wet bricks on to dryer car,.after stacking bricks onto dryer car,put into the small tunnel dryer for dring,we need the second stacking in the hoffman kiln from the dryer car.the last step is to fire in the tunnel kiln.the whole number of workers is 40-55.