铜管, Copper turnings

铜柱, Copper slug

铜箔, Copper foil

铜箔, Copper foil

铜箔, Copper foil

铜箔, Copper foil

铜溅射靶, Copper sputtering target

铜纱, Copper gauze

铜网, Copper gauze

铜线, Copper wire