... 2.metal stamping parts 3.case for crystal oscillator metal case for crystal oscillator1.materil:copper,iron,aluminium,Kovar2 ... partsFacility:stamping machines,automatic stamping machine,punching machines,bending machines,welding machinies, lathes, ... Milling machine,Grinder,Radial drilling machine and so onMeterial:SGCC(galvanized sheet),stainless ...