异形铜管shaped copper tube
无铅铜管Lead-free copper tube
无铅铜锭Lead Free copper ingot
无铅铜棒Lead free copper rod
无铅铜棒Lead Free copper rod
无铅黄铜锭Lead free brass ingot
铜管brass tube
铜锭brass ingot
铜棒shaped copper rod
铜棒Forged copper rod
