铬单晶片, Chromium crystallite pieces

钴粉, Cobalt powder

钴柱, Cobalt slug

钴箔, Cobalt foil

钴线, Cobalt wire

铜粉, Copper powder

铜, Copper

铜管, Copper turnings

铜薄片, Copper Thinfoil

铜箔, Copper foil