钴丝, Cobalt wire

钴丝, Cobalt wire

铜粉, Copper powder

铜粉, Copper powder

铜薄片, Copper flake

铜粒, Copper shot

铜柱, Copper slug

铜薄片, Copper Thinfoil

铜箔, Copper foil

铜箔, Copper foil