... metal parts face material:Ag,AgNi,AgCdO,AgSnO2 base material: Cu,Brass,Bronze,CuNi,Cube,CuNiZn,Fe,Ni,Monel,SUS. clad silver metal ... type: inlay ,overlay ,edgelay,onlay.. and we can produce tri-metal material by custom size. application : wall switch , motor breaker ,IC ...