After setting the parameters of the corn pulp bag stretching film vacuum packaging machine film equipment, use the manual button on the touch screen main screen. After it turns dark, install the stretching film of the equipment, pass the film through each axis by hand, and press the film on the front roller by hand. Then press the film walking button on the panel or the manual film walking button in the lower right corner of the front roller. The equipment moves forward one step, release the hand pressing on the front roller, and the film has been clamped by the chains on both sides with the equipment's step, entering the next workstation. Press the film walking button or manual film walking button again, and the device will run another step.