Variant of NAICS 1997 - Goods and services
- 11-33 - Goods
- 31-33 - Manufacturing
- 331 - Primary Metal Manufacturing
- 3313 - Alumina and Aluminum Production and Processing
- 33131 - Alumina and Aluminum Production and Processing
- 331313 - Primary Production of Alumina and Aluminum
- 331317 - Aluminum Rolling, Drawing, Extruding and Alloying
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