Silver/Copper Contact is in low concentrations increases the mechanical hardness and the resistance against electrical wear, Specifications1,Over 5-year experience ... Rivets,Solid Rivets,Pure Silver RivetsCertificate ISO 9001:2008, RoHS, SGS, etcMaterialsAgCu, AgCdO, AgSnO, AgZnO, AgNi, AgSnOInO, Ag, Cu, etc ApplicationsLow Voltage Electrical ... up to our company. Please do not hesitate to contact us!