... experience 2,AgCdO,AgSnOInO,AgNi,AgZnO,AgCu 3,Usage:relay,switch,contactor,breaker,starter,motor 4,ISO9001,SGS MaterialAg/Cu, ... and has excellent properties of contacts (2) AgSnO2 has higher thermal stability (3) AgSnO2 has higher resistance against welding and ... etc.undercurrent contact devices,microswitches and precision instrument. electrical contact,bimetal contact rivet,switch silver contact