TU0无氧铜板—TU1环保无氧铜板—C1011无氧铜管
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..