钴箔, Cobalt foil

钴线, Cobalt wire

铜粉, Copper powder

铜粉, Copper powder

铜卷�? Copper turnings

铜薄�? Copper Thinfoil

铜箔, Copper foil

铜箔, Copper foil

铜溅射靶, Copper sputtering target

铜纱, Copper gauze