The brazing and soldering flux series includes: silver brazing fluxes, copper brazing fluxes, aluminum brazing fluxes and environmental-friendly non-corrosive aluminum brazing fluxes, etc... These are available as powder, paste or liquid.
| Standard | Alloy | Chemical Composition(%) | Solidus | Liquidus | Application |
| CJ301 | Copper gas brazing flux powder | Boric-Acid:65-75% Borax:25-35% | - | - | Melting point is about 850-1150℃, flux for gas welding and brazing of copper and copper alloys, steel and stainless steel. |
| CJ001 | Copper brazing flux paste | - | - | Brazing flux of steel and stainless steel, hard alloys within 850～1150℃. | |
| QJ102 | Silver brazing flux powder | H3BO3:33-37.0% KBF4:21-25.0% KF:40-44.0% | - | Brazing flux of copper, copper alloys, steel and stainless steel within 550～850℃. | |
| QJ305 | Silver brazing flux paste | KF KBF4 B2O3 Fluoroborate-compound | - | Brazing of copper, copper alloys, carbon steel, stainless steel, hard alloys, etc. within 620～850℃. | |
| QJ201 | Aluminum brazing flux powder | Lithium-Chloride:31.0-35.0 Zinc-Chloride:6.0-10.0 Potassium-Chloride:47.0-51.0 Sodium-Fluoride:9.0-11.0 | - | Brazing flux of aluminum and aluminum alloys within 450～620℃. | |
| QJ208 | Non-Corrosive aluminum brazing flux | K1-3ALF4-6 | - | Brazing flux of aluminum and aluminum alloys, within 558～617℃. |
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