This product is suitable for cutting tools, jewelry, metal frames, and other products welding, settle the soldering machine temperature at range of 580 ℃ to 880 ℃, then use with high silver soldering wire, like brazing alloy, manganese, copper, steel and stainless steel can get the best welding effect. Advantages: 1. This flux has strong permeability, good diffusion, after use the workpiece surface can be smooth and easy to do next process. 2. It can be used repeatedly without caking or settling after long time storage. 3. Good ability to remove oxidation film, and its high activity can be maintained at the range of melting temperature .