2. When the ointment has odor residue, wipe the scraping head with disinfectant, and then dry it with cotton cloth or cotton paper. Do not soak in water to avoid damage or leakage.

3, the power cord has a certain expansion limit, don't pull too much, so as not to cause elastic fatigue of the solenoid.

4. When not in use, disconnect the power switch and unplug it.

5. Don't use it in humid environment.