... Cu, AgSnO2In2O3/Cu, AgCu/Cu, AgZnO/Cu, AgCdO/Cu, etc.Tri-metal Electrical Contacts: AG/Cu/AG, FAG/Cu/FAG, AgNi ... total amount more 200 sets for making Contact Rivet include Tri-metal rivet machine from Germany, Bi-compoundedrivet machine, Colored ... requirement, and the output can surpass one billion pieces annually. Industrial Silver Pointer,Industrial Silver Contact,Industrial Contact Silver