编码描述:,of copper-nickel base alloys (cupro-nickel),of copper-nickel base alloys (cupro-nickel) or copper-nickel-zinc base alloys (nickel silver),of copper-nickel-zinc base alloys (nickel silver) 编码来源:韩国原始海关数据 产品标签: copper,alloys,appliance,machine,instrument,utp,calcium carbonate,ultrason,zinc base,fish finders