1,Over 20-year experience 2,Electrical Moving Contact,Movable Contact,Contact Rivets 3,Usage:relay,switch,KDS,breaker 4,SGS ... surface is not liable to oxidization. 3. Fk Ag contact rivet: This fine crystal silver contains a 0.12% nickel ... more than 200 sets for making Contact Rivet include Tri-metal rivet machine from Germany, Bi-compounded rivet machine, Colored Microscope, 3D coordinator ...