... 2) welding ring with wide application 3) stable quality The type of BCu80SnPAg welding ring is ... the lower melting point, in the process of soldering, the brazing can filled quickly between ... 17.8×1.6, etc, which are wide application for refrigeration,mechanism,mechanical and electrical, ... . Our company adherence to the business principle of quality first, good service,advanced techniques, continuous ...