Potassium fluoride,anhydrous
           Potassium fluoride,extra pure
           Potassium fluoride,Granular
           Silicon Dioxide
           Hydrofluoric acid
           Synthetic Cryolite
           Potassium Fluoaluminate
           Ammonium bifluoride
           Potassium Bifluoride
           Aluminium fluoride
           Sodium fluoride
           Potassium Fluorosilicate
           Fluorosilicic Acid
           Sodium silicofluoride
           Potassium Hydroxide Flakes
           Magnesium Fluoride
           Magnesium fluorosilicate
           Barium Fluoride
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The present invention discloses a silver paste having the formula ingredients including anhydrous potassium fluoride, potassium fluoroborate, boron anhydride and water; the weight percent of each component is anhydrous potassium fluoride: potassium fluoroborate: boron anhydride = 42:23:35, the above three components mixed with the weight percentage of water as a mixture: water = 63:37; said silver paste by adding a little humectant; the silver solder paste manufacturing method, according to the weight percentage 42:23:35 anhydrous potassium fluoride: potassium fluoroborate: boric anhydride mixture into the porcelain altar, adding the mixture with water weight percentage of 63:37 quantitative water, adding stone ball in the porcelain altar. The invention has the following advantages: practical, low production cost, safe, environmentally friendly, well-formed, and can be used in the ball mill. The amount of smoke is small, less residue after welding, easy to clean up.