2, no fire, no electricity, no need to worry about burning;

3. Vacuum gun can be used to adjust the negative pressure value;

4. Use the connector to realize single-person operation;

5, with the help of special-shaped cans, aprons, cement and other items, can be used in any part of the body;

6. Choose any part of the body at will;

7. Can operate a variety of methods, such as sitting can method and flashing can method.