... frequency up to 20Hz,speedy dynamic response,easy to arc initiation,resistant to interference,stable arc,low welding noice,little welding ... energy consumption less than 100w,Comparing with tradtional welding machine.energy saving up to 50%.5.Good thrust ... welding,cellulose electrodes dowm hand welding is avallable.6.Applicable for welding of all kinds of ferrous metals such as low carbon steel,medium ...