Ethyl 5-ethyl-1,2,4-oxadiazole-3-carboxylate

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

铜箔, Copper foil

铜溅射靶, Copper sputtering target

铜板, Copper plate