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QJ305 solvent paste silver brazing is the latest successful development of a set of various domestic and international advantages of the new silver brazing flux solvent, its fluidity, permeability are stronger than other similar flux. Use: with silver-based solder in the 600-850 degrees Celsius brazing copper and copper alloy, stainless steel, nickel alloy, carbide, diamond and other materials, poly chips for fire, resistance, induction, high frequency, moderate oven various soldering methods. Physical State: paste, particle size ≤ 150μm, density of 1.9-2.1 Implementation of the standards: JB/T6045-92 "hard brazing flux" Main components: fluoride borate, borate compound, active agent, water, etc., does not contain prohibited substances. Features: easy to use stable, long-term storage of non-caking, no sedimentation, activity, and liquidity is good, smooth flat welds, welded joint minimal residue. Process is better than powder flux, completely replace the same products abroad. Application: refrigeration parts, compressors, stone tools, woodworking tools, auto parts, spectacle frames, jewelry, appliances, hardware tools.