供应国标H59黄铜棒,H59pb-1黄铜棒,H62黄铜棒,H68铜棒
CuZn39Pb3黄铜合金黄铜棒12mm...
HNi56-3镍黄铜管镍黄铜板镍黄铜棒
锰黄铜HMn55-3-1锰黄铜棒 HMn...
C37800铅黄铜易切C37800黄铜棒
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