North American Industry Classification System (NAICS) 2002
31-33 - Manufacturing
This sector comprises establishments primarily engaged in the physical or chemical transformation of materials or substances into new products. These products may be finished, in the sense that they are ready to be used or consumed, or semi-finished, in the sense of becoming a raw material for an establishment to use in further manufacturing. Related activities, such as the assembly of the component parts of manufactured goods; the blending of materials; and the finishing of manufactured products by dyeing, heat-treating, plating and similar operations are also treated as manufacturing activities. Manufacturing establishments are known by a variety of trade designations, such as plants, factories or mills.
Manufacturing establishments may own the materials which they transform or they may transform materials owned by other establishments. Manufacturing may take place in factories or in workers' homes, using either machinery or hand tools.
Certain activities involving the transformation of goods are classified in other sectors. Some examples are post-harvest activities of agricultural establishments, such as crop drying; logging; the beneficiating of mineral ores; the production of structures by construction establishments; and various activities conducted by retailers, such as meat cutting and the assembly of products such as bicycles and computers.
334 - Computer and Electronic Product Manufacturing
This subsector comprises establishments primarily engaged in manufacturing computers, computer peripheral equipment, communications equipment, and similar electronic products, as well as components for such products. The computer and electronic product manufacturing industries employ production processes that are characterized by the design and use of integrated circuits and the application of highly specialized miniaturization technologies.
3342 - Communications Equipment Manufacturing
This industry group comprises establishments primarily engaged in manufacturing equipment used to move signals electronically over wires or through the air, such as telephone apparatus, radio and television broadcast equipment, and satellite communications equipment.
33421 - Telephone Apparatus Manufacturing
This industry comprises establishments primarily engaged in manufacturing wired telephone and data communications equipment. These products may be stand-alone or board-level components of a larger system.
Exclusion(s):
Establishments primarily engaged in:
- manufacturing cellular telephones; and microwave transmission equipment (See 33422 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing)
- manufacturing internal and external computer modems, fax/modems and telephone transformers (See 33441 Semiconductor and Other Electronic Component Manufacturing)
33422 - Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing
This industry comprises establishments primarily engaged in manufacturing radio and television broadcast and wireless communication equipment.
Exclusion(s):
Establishments primarily engaged in:
- manufacturing wired and non-wired intercommunications equipment (intercoms) (See 33429 Other Communications Equipment Manufacturing)
- manufacturing household audio and video equipment, such as television and radio receiving sets (See 33431 Audio and Video Equipment Manufacturing)
33429 - Other Communications Equipment Manufacturing
This industry comprises establishments, not classified to any other industry, primarily engaged in manufacturing communications equipment.
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