... material can be provided all conmons type:Such as: copper,steel,carbon steel( Carbon steel: C1006,C1010,C1018, ... 2) Material: iron, carbon steel, stainless steel, brass, copper, alloy steel, aluminum, cold rolled steel with various plating; ... from Taiwan,spectrum analyzer device imported from Germany,vacuum melting furnace,CNC machine center17Production euipment:devise industrial,auto, motorcycle, ...