Songfa alloy material co. Ltd, as the ISO 9001 company, we have 20000m2 factory, 120workers, 10 senior engineers and 12QA&QC. We have been in contact material for more then 26years. Our main products are silver wire, contact rivet, silver electric contact rivet, solid rivet, bimetal rivet, tri-metal rivet, contact tip, contact button, bimetal strip, silver sheet, clad metal, aluminium clad steel plate, aluminium clad copper plate, copper clad steel palte, copper steel copper plate