Sunraj Industries Import and supplies Various series of alloy Lead-Free Solder in form of wires, stick and ingots , in 97/3 ( 97 percent Tin and 3 percent copper).Advantages of Lead Free solder: High-performance soldering flux, fast melting speed, good fluidity and quick speed to coat with tin.Lower soldering flux spatter rate during soldering. Soldering flux is evenly distribution with good continuity. Very little smoke and smell. Little residue, no corrosion, high insulation resistance and no-clean solder wire.