钴箔, Cobalt foil

钴溅射靶, Cobalt sputtering target

钴棒, Cobalt rod

铜粉, Copper powder

铜粒, Copper shot

铜柱, Copper slug

铜箔, Copper foil

铜箔, Copper foil

铜箔, Copper foil

铜板, Copper plate