... 2,AgCdO,AgSnOInO,AgNi,AgZnO,AgCu,Cu 3,Usage:relay,switch,contactor,breaker,thermostat 4,ISO9001,SGS Contact type ... typical applications include low voltage contactors, relays, automatic switch flash relays, auxiliary switch series, timers, starters, breakers and leakage ... is more difficult to processing these two materialsUsage:Breaker,relay,contactor,timer,thermostat,train,swithes and other home ...