How to vacuum the bag?

1, cut the plastic bottle, leaving the upper part.

2. Make the bottle cap into a small hole into which the straw can be inserted.

3. Insert the straw into the small hole of the bottle cap.

4. Insert the other end of the straw into the sealed bag.

5. Put it behind the hair dryer, turn on the power of the hair dryer and evacuate.

6. Unplug the pipe and vacuum it.

Precautions:

1, don't open the small hole of the bottle cap too wide, just insert the straw.

2. Turn off the power supply in time after exhausting the air in the sealed bag, and the blower may burn out the motor if it works for a long time.