环保H65黄铜板H62黄铜板C2680冲压黄铜板
批发T2紫铜板C1100紫铜..
环保H65黄铜板H62黄铜板..
H62黄铜棒H59黄铜棒国标..
批发H65黄铜带C2680黄..
供应环保H65黄铜线H70黄..
供应C5191磷铜带C521..