... , manganese steel wire, phosphorus copper wire, nickel-plated wire, zinc-plated wire, tin-plated copper wire, nickel-plated steel wire ... heat resistant steel wire), bronze, copper, phosphorus copper, beryllium copper. Surface treatmentNickel-plating, zinc-plating, tin-plating, copper-plating, black Oxide. gold, ... areaMalaysia, Holland, America, Thailand, Venezuela, Shipping ways: copper small springs