- Alloying purchased copper [2007]
- Alloying purchased copper metals [2007]
- Copper alloys (e.g., brass, bronze) made from purchased metal or scrap [2007]
- Copper and copper-based shapes (e.g., cake, ingot, slag, wire bar) made from purchased metal or scrap [2007]
- Copper powder, flakes, and paste made from purchased copper [2007]
- Copper secondary smelting and alloying [2007]
- Copper secondary smelting and refining from purchased metal or scrap [2007]
- Metal powder and flake made from purchased copper [2007]
- Paste made from purchased copper [2007]
- Powder made from purchased copper [2007]
- Refining copper, secondary [2007]
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