... of China for the Lead-free Tin solder wire, SSTS lead-free tin solder wire /bar With the dmands of ... of the Sn-Ag-Cuand Sn-Cu alloy.With time passed ,soldering free of leas has come into ... knowadays only afew tens being used, now soldering free of lead has beedn defined correctly, with much ... .So, ssts co., develop and produce the lead-free solder alloy as follow: StandardAlloy composition %Solid phase ...