100g soldier paste flux silver brass soldiers powder for lassen copper aluminium

description: ootdty characteristics: 100% new and within the range of 620-850 degrees, and with silver-based solders, silver soldering copper and copper alloy, copper and stainless steel, can effectively dissolve the various metal oxides, tank soldering overflow. function: 1. melting, which, isolating, prevents oxidation 2. purify the surface of weld three. soldering/pudding in flow warnings: 1. pure oils, oxides and other impurities of solar components and surfaces. 2. b