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.

339 - Miscellaneous Manufacturing

This subsector comprises establishments, not classified to any other subsector, primarily engaged in manufacturing activities. These establishments manufacture a diverse range of products, such as medical equipment and supplies, jewellery, sporting goods, toys and office supplies.

3391 - Medical Equipment and Supplies Manufacturing

This industry group comprises establishments primarily engaged in manufacturing medical equipment and supplies. Establishments primarily engaged in grinding eyeglasses and hard contact lenses to prescription, on a factory basis, are included.

33911 - Medical Equipment and Supplies Manufacturing

This industry comprises establishments primarily engaged in manufacturing medical equipment and supplies. Establishments primarily engaged in grinding eyeglasses and hard contact lenses to prescription, on a factory basis, are included.

  • Exclusion(s):

    Establishments primarily engaged in:

    • manufacturing moulded plastic lens blanks (See 32619 Other Plastic Product Manufacturing)
    • manufacturing moulded glass lens blanks (See 32721 Glass and Glass Product Manufacturing)
    • manufacturing laboratory instruments, x-ray apparatus, and electro-medical apparatus, such as hearing aids (See 33451 Navigational, Measuring, Medical and Control Instruments Manufacturing)
    • retailing prescription eyeglasses and contact lenses made on the premises (See 44613 Optical Goods Stores)
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