Features: electrical discharge effect is stable， durable

Precautions:

                 1， electrode rod when using a low frequency， can be removed only with the electrode rod ultrafine sandpaper to continue to use worn above the soot， while recalibrate the position of the electrode between the rods， so as to ensure the quality of welding.

                  2， when the discharge electrode rod poor welding results， the timely replacement of the electrode rod.