Protection function of upper and lower limit switches with red rubber cushion, any delay 0-5sec (optional) the machine through the computer control the lifting movement of the spray gun uniform on the, implement automatic powder of uniform, to replace the manual powder spraying, due to the control of common computer and transducer, moving up and down is more uniform, dusting effect better, speed fast is can not be replaced by full automatic aluminium profile electrostatic spraying production line equipment.