Horizon Silver-Copper-Zinc-Tin brazing material (Cadmium free Silver based brazing material) made by adding stannum (Sn) to Silver -Copper-Zinc brazing alloy, can reduce melting point and improve plasticity. It has low melting point property and has good wetting ability and gap filling ability. Besides, it with bright and clean brazing seam surface and intensive joint, applies to brazing materials of lower temperature. When brazing, it has no cadmium pollution.