... 1.materil:copper,iron,aluminium,Kover 2.metal stamping parts 3.case for crystal oscillator metal case for crystal oscillator1.materil:copper,iron,aluminium,Kovar2.specification ... and so onMeterial:SGCC(galvanized sheet),stainless steel, copper, brass, aluminum,etcFinish:zinc/chrome/nickel plating,electrophoresis paint,powder coating ,anodize ...