It is made of copper-based brazing filler metal and other components, mostly in the form of viscous paste with various colors, and the brazing temperatures of different types vary greatly. It has good fluidity and gap-filling performance, is suitable for automated production, features simple subsequent processing, and meets environmental protection standards. It can weld various metals such as copper and stainless steel, is widely used in industries like automotive and electrical engineering, and is compatible with multiple welding processes. It needs to be stirred evenly before use and can be applied manually or automatically; it is packaged in plastic cans or syringes, should be stored in a cool and dry place, and usually has a shelf life of 6 months.