Owing to oxide film on surface of stainless steel slowing down brazing filler metal wetting base material, it is hard to realize low-temperature brazing. Ningbo Thaile Chemical has specially developed flux to solve the problem of brazing stainless steel under low-temperature (less than 300℃) by using normal tin-lead solder. The flux can be widely used in all kinds of stainless steel products, advertising signs, arts and crafts, clocks and instruments, precision parts, medical equipment, PCB board production, etc., which have strict requirements for quality.