1. It can heat up instantly, just pick it up and use it 2. Electric heating elements are cheap and of good quality, requiring only a small expenditure each year 3. Hang up and hibernate immediately 4. The user can set the sleep temperature 5. Small solder joints can be soldered 6. The two handles work completely independently, and different welding heads can be used 7. Do not use switching power supply, but use a stable and powerful traditional transformer
