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优质铜合金CuMn3(2.1356) CuNi10(2.0811)铜棒 板卷带可分条
2.0811铜带CUNI23MN 2.0881合金铜CUNI30MN 2.0890铜材 铜棒
供应2.0811 2.0881 2.0890 2.1362 2.0842黄铜磷铜棒板管线条
