... rosin, excellent wettability, fluidity, flux-cored solder wire Spec: Lead free: Sn-0.7Cu,Sn-0.7Cu-Ni-Ce,Sn-0 ... frontier technologies in the fields of aviation, electronics, military industry, communication, and computer, etc. No-clean tin wire(SGS)Feature:M ... are widely used in field of lighting, electric motor, and transformer, etc.