7403            |    Refined copper and copper alloys, unwrought.
7403.11.00
7403.12.00     -- Wire-bars
7403.13.00     -- Billets
7403.19.00     -- Other
7403.21.00
7403.22.00     -- Copper-tin base alloys (bronze)
7403.29.00     -- Other copper alloys (other than master alloys of heading 74.05)