直销:规格—C3601铅黄铜棒、C3713铅黄铜管化学成分
C441100磷铜棒 C44..
直销:规格—C3601铅黄铜..
专业生产QTe0.5碲铜棒—..
供应BZn18-26锌白铜棒..
制造商C441100磷铜棒—..
7075铝合金排规格,北京7..