... AgCdO15/Cu AgNi10/Cu AgSnO2/Cu AgZnO/Cu Ag/Cu Quality Control:1. no oil,indentation, pit circle printed, needle ... rivet head3. no liable to oxidization on its surface4. high level of electrical and thermal conductivity, good plasticity and ... used in small and medium-sized current contactor,starter,temperature controller,switches,etc.undercurrent contact devices,microswitches and precision instrument. ...