铬粉末, Chromium powder

铬立方体块, Chromium cubes

钴片块, Cobalt pieces

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