... .small size 3.environmental 4.high efficiency usage:weld, harden,forge,anneal and melt High Frequency Electric Welder for Brazing Saw ... place3, energy saving and low cost4, the oxidation of small area5, the appearance of fine after welding6, uniform heating, ... solidThird, the high-frequency welding machine for welding marble saw blades, wood saw blade brazing, its advantages are:1, efficient, rapid ...