Variant of North American Industry Classification System (NAICS) 2022 Version 1.0 for Industrial production (based on the 2008 International Recommendations for Industrial Statistics)

• 1 - Industrial production
• 31-33 - Manufacturing
• 333 - Machinery manufacturing
• 3339 - Other general-purpose machinery manufacturing

33399 - All other general-purpose machinery manufacturing

This industry comprises establishments, not classified to any other industry, primarily engaged in manufacturing machinery that is not designed for use in any specific industry.