钴粉, Cobalt powder

钴箔, Cobalt foil

钴箔, Cobalt foil

钴线, Cobalt wire

铜粉, Copper powder

铜薄片, Copper flake

铜柱, Copper slug

铜薄片, Copper Thinfoil

铜箔, Copper foil

铜箔, Copper foil