66 SIC industries for “system optimization support ltd”

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SIC (Standard Industrial Classification) classifies businesses by their primary activity. It is used for marketing, business data, research, and regulatory filings. Learn about SIC →

  1. 7533 Automotive Exhaust System Repair Shops

    The installation, repair, or sale and installation of automotive exhaust systems.

    1,808 U.S. business records

  2. 4952 Sewerage Systems

    The collection and disposal of wastes conducted through a sewer system, including such treatment processes as may be provided.

    371 U.S. business records

  3. 7373 Computer Integrated Systems Design

    Developing or modifying computer software and packaging or bundling the software with purchased computer hardware (computers and computer peripheral equipment) to create and market an integrated system for specific application.

    15,735 U.S. business records

  4. 7382 Security Systems Services

    Monitoring and maintaining security systems devices, such as burglar and fire alarms.

    5,196 U.S. business records

  5. 4971 Irrigation Systems

    Operating water supply systems for the purpose of irrigation.

    332 U.S. business records

  6. 3812 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical Systems and Instruments

    Search, detection, navigation, guidance, aeronautical, and nautical systems and instruments.

    1,668 U.S. business records

  7. 3536 Overhead Traveling Cranes, Hoists, and Monorail Systems

    Overhead traveling cranes, hoists, and monorail systems for installation in factories, warehouses, marinas, and other industrial and commercial establishments.

    315 U.S. business records

  8. 4953 Refuse Systems

    The collection and disposal of refuse by processing or destruction or in the operation of incinerators, waste treatment plants, landfills, or other sites for disposal of such materials.

    11,487 U.S. business records

  9. 8742 Management Consulting Services

    Furnishing operating counsel and assistance to managements of private, nonprofit, and public organizations.

    85,365 U.S. business records

  10. 1796 Installation or Erection of Building Equipment, Not Elsewhere Classified

    Special trade contractors primarily engaged in the installation or erection of building equipment, not elsewhere classified, such as elevators, pneumatic tube systems, and dust collecting equipment.

    2,028 U.S. business records

  11. 5063 Electrical Apparatus and Equipment Wiring Supplies, and Construction Materials

    The wholesale distribution of electrical power equipment for the generation, transmission, distribution, or control of electric energy; electrical construction materials for outside power transmission lines and for electrical systems; and electric light fixtures and bulbs.

    19,463 U.S. business records

  12. 3564 Industrial and Commercial Fans and Blowers and Air Purification Equipment

    Industrial and commercial blowers, industrial and commercial exhaust and ventilating fans, and attic fans, or in manufacturing dust collection and other air purification equipment for heating, ventilating and air-conditioning systems or for industrial gas cleaning systems.

    437 U.S. business records

  13. 3651 Household Audio and Video Equipment

    Electronic audio and video equipment for home entertainment (including automotive), such as television sets, radio broadcast receivers, tape players, phonographs, and video recorders and players.

    642 U.S. business records

  14. 3663 Radio and Television Broadcasting and Communications Equipment

    Radio and television broadcasting and communications equipment.

    807 U.S. business records

  15. 7371 Computer Programming Services

    Providing computer programming services on a contract or fee basis.

    29,254 U.S. business records

  16. 1711 Plumbing, Heating and Air-Conditioning

    Special trade contractors primarily engaged in plumbing, heating, air-conditioning, and similar work.

    air system balancing and testing - contractors, drainage system installation, cesspool and septic tank - contr…

    104,365 U.S. business records

  17. 2515 Mattresses, Foundations, and Convertible Beds

    Innerspring mattresses, box spring mattresses, and non-innerspring mattresses containing felt, foam rubber, urethane, hair, or any other filling material; and assembled wire springs (fabric, coil, or box) for use on beds, couches, and cots.

    beds, sleep-system ensembles: flotation and adjustable

    222 U.S. business records

  18. 1731 Electrical Work

    Special trade contractors primarily engaged in electrical work at the site.

    …work - contractors, electronic control system installation - contractors, fire alarm installation - contractor…

    48,038 U.S. business records

  19. 7622 Radio and Television Repair Shops

    Repairing radios, televisions, phonographs, stereo equipment, and tape recorders.

    …and tape recorder, public address system repair, radio and television receiver installation, radio repair shop…

    1,318 U.S. business records

  20. 0721 Crop Planting and Protection

    Performing crop planting, cultivating, and protecting services.

    …or without fertilizing, irrigation system operation services (not providing water), orchard cultivation servic…

    1,191 U.S. business records

  21. 3822 Automatic Controls for Regulating Residential and Commercial Environments and Appliances

    Temperature and related controls for heating and air-conditioning installations and refrigeration applications, which are electrically, electronically, or pneumatically actuated, and which measure and control-variables such as temperature and humidity; and automatic regulators used as components of household appliances.

    …in-built thermostats, filled system and bimetal types, incinerator control systems, residential and commercial…

    577 U.S. business records

  22. 3829 Measuring and Controlling Devices, Not Elsewhere Classified

    Measuring and controlling devices, not elsewhere classified, including meteorological instruments.

    …indicators, aircraft engine, fuel system instruments, aircraft, fuel totalizers, aircraft engine, gauges excep…

    651 U.S. business records

  23. 7539 Automotive Repair Shops, Not Elsewhere Classified

    Specialized automotive repair, not elsewhere classified, such as fuel service (carburetor repair), brake relining, front-end and wheel alignment, and radiator repair.

    …front end repair, automotive, fuel system conversion, automotive, fuel system repair, automotive, generator an…

    4,896 U.S. business records

  24. 3823 Industrial Instruments for Measurement, Display, and Control of Process Variables; and Related Products

    Industrial instruments and related products for measuring, displaying (indicating and/or recording), transmitting, and controlling process variables in manufacturing, energy conversion, and public service utilities.

    …process type, thermometers, filled system: industrial process type, time cycle and program controllers, indust…

    745 U.S. business records

  25. 7372 Prepackaged Software

    The design, development, and production of prepackaged computer software.

    27,541 U.S. business records

  26. 3585 Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment

    Refrigeration equipment and systems and similar equipment for commercial and industrial use; complete air-conditioning units for domestic, commercial, and industrial use; and warm air furnaces.

    740 U.S. business records

  27. 3826 Laboratory Analytical Instruments

    Laboratory instruments and instrumentation systems for chemical or physical analysis of the composition or concentration of samples of solid, fluid, gaseous, or composite material.

    645 U.S. business records

  28. 3593 Fluid Power Cylinders and Actuators

    Hydraulic and pneumatic cylinders and actuators for use in fluid power systems.

    95 U.S. business records

  29. 3492 Fluid Power Valves and Hose Fittings

    Hydraulic and pneumatic valves, hose and tube fittings, and hose assemblies for fluid power systems.

    174 U.S. business records

  30. 3699 Electrical Machinery, Equipment, and Supplies, Not Elsewhere Classified

    Electrical machinery, equipment, and supplies, not elsewhere classified, including high energy particle acceleration systems and equipment, electronic simulators, appliance and extension cords, bells and chimes, and insect traps.

    736 U.S. business records

  31. 3644 Noncurrent-Carrying Wiring Devices

    Noncurrent-carrying wiring devices.

    33 U.S. business records

  32. 9511 Air and Water Resource and Solid Waste Management

    Government establishments primarily engaged in regulation, planning, protection and conservation of air and water resources; solid waste management; water and air pollution control and prevention; flood control; drainage development, and consumption of water resources; coordination of these activities at intergovernmental levels; research necessary for air pollution abatement and control and conservation of water resources.

    3,196 U.S. business records

  33. 7389 Business Services, Not Elsewhere Classified

    Furnishing business services, not elsewhere classified, such as bondspersons, drafting services, lecture bureaus, notaries public, sign painting, speakers' bureaus, water softening services, and auctioneering services, on a commission or fee basis.

    118,792 U.S. business records

  34. 3446 Architectural and Ornamental Metal Work

    Architectural and ornamental metal work, such as stairs and staircases, open steel flooring (grating), fire escapes, grilles, railings, and fences and gates, except those made from wire.

    1,935 U.S. business records

  35. 3535 Conveyors and Conveying Equipment

    Conveyors and conveying equipment for installation in factories, warehouses, mines, and other industrial and commercial establishments.

    338 U.S. business records

  36. 4941 Water Supply

    Distributing water for sale for domestic, commercial, and industrial use.

    4,713 U.S. business records

  37. 4841 Cable and other Pay Television Services

    The dissemination of visual and textual television programs, on a subscription or fee basis.

    3,259 U.S. business records

  38. 4961 Steam and Air-Conditioning Supply

    Establishments engaged in the production and/or distribution of steam and heated or cooled air for sale.

    43 U.S. business records

  39. 3669 Communications Equipment, Not Elsewhere Classified

    Communications and related equipment, not elsewhere classified.

    1,003 U.S. business records

  40. 3494 Valves and Pipe Fittings, Not Elsewhere Classified

    Metal valves and pipe fittings, not elsewhere classified, such as plumbing and heating valves, and pipe fittings, flanges, and unions, except from purchased pipes.

    375 U.S. business records

  41. 3724 Aircraft Engines and Engine Parts

    Aircraft engines and engine parts.

    305 U.S. business records

  42. 5084 Industrial Machinery and Equipment

    The wholesale distribution of industrial machinery and equipment, not elsewhere classified.

    11,833 U.S. business records

  43. 8399 Social Services, Not Elsewhere Classified

    Providing social services, not elsewhere classified, including establishments primarily engaged in community improvement and social change.

    113,493 U.S. business records

  44. 2521 Wood Office Furniture

    Office furniture, chiefly of wood.

    82 U.S. business records

  45. 2522 Office Furniture, except Wood

    Office furniture, except furniture chiefly of wood.

    411 U.S. business records

  46. 3498 Fabricated Pipe and Pipe Fittings

    Fabricating pipe and pipe fittings from purchased metal pipes by processes such as cutting, threading, and bending.

    469 U.S. business records

  47. 3567 Industrial Process Furnaces and Ovens

    Industrial process furnaces, ovens, induction and dielectric heating equipment, and related devices.

    191 U.S. business records

  48. 3569 General Industrial Machinery and Equipment, Not Elsewhere Classified

    Machinery, equipment, and components for general industrial use, and for which no special classification is provided.

    1,562 U.S. business records

  49. 3694 Electrical Equipment for Internal Combustion Engines

    Electrical equipment for internal combustion engines.

    235 U.S. business records

  50. 3714 Motor Vehicle Parts and Accessories

    Motor vehicle parts and accessories, but not engaged in manufacturing complete motor vehicles or passenger car bodies.

    4,111 U.S. business records

  51. 3743 Railroad Equipment

    Building and rebuilding locomotives (including frames and parts, not elsewhere classified) of any type or gauge; and railroad, street, and rapid transit cars and car equipment for operation on rails for freight and passenger service.

    173 U.S. business records

  52. 3845 Electromedical and Electrotherapeutic Apparatus

    Electromedical and electrotherapeutic apparatus.

    …retinoscopes, electromedical, surgical support systems: heart-lung machines, except iron lungs and, transcutan…

    483 U.S. business records

  53. 5087 Service Establishment Equipment and Supplies

    The wholesale distribution of equipment and supplies for barber shops, beauty parlors, power laundries, drycleaning plants, upholsterers, undertakers, and related personal service establishments.

    8,619 U.S. business records

  54. 7993 Coin-Operated Amusement Devices

    Operating coin-operated amusement devices, either in their own or in other places of business.

    3,118 U.S. business records

  55. 3728 Aircraft Parts and Auxiliary Equipment, Not Elsewhere Classified

    Aircraft parts and auxiliary equipment, not elsewhere classified.

    …except guns, aircraft arresting device system, aircraft assemblies, sub?assemblies, and parts, except engines…

    995 U.S. business records

  56. 3679 Electronic Components, Not Elsewhere Classified

    Electronic components, not elsewhere classified, such as receiving antennas, switches, and waveguides.

    1,809 U.S. business records

  57. 4482 Ferries

    Operating ferries for the transportation of passengers or vehicles.

    92 U.S. business records

  58. 8713 Surveying Services

    Providing professional land, water, and aerial surveying services.

    5,948 U.S. business records

  59. 4131 Intercity and Rural Bus Transportation

    Furnishing bus transportation, over regular routes and on regular schedules, the operations of which are principally outside a single municipality, outside one group of contiguous municipalities, and outside a single municipality and its suburban areas.

    923 U.S. business records

  60. 4142 Bus Charter Service, except Local

    Furnishing bus charter service, except local, where such operations are principally outside a single municipality, outside one group of contiguous municipalities, and outside a single municipality and its suburban areas.

    1,137 U.S. business records

  61. 4512 Air Transportation, Scheduled

    Furnishing air transportation over regular routes and on regular schedules.

    1,257 U.S. business records

  62. 4731 Arrangement of Transportation of Freight and Cargo

    Furnishing shipping information and acting as agents in arranging transportation for freight and cargo.

    8,602 U.S. business records

  63. 8221 Colleges, Universities, and Professional Schools

    Colleges, universities, and professional schools furnishing academic courses and granting academic degrees.

    10,893 U.S. business records

  64. 3357 Drawing and Insulating of Nonferrous Wire

    Drawing, drawing and insulating, and insulating wire and cable of nonferrous metals from purchased wire bars, rods, or wire.

    427 U.S. business records

  65. 2761 Manifold Business Forms

    Designing and printing, by any process, special forms for use in the operation of a business, in single and multiple sets, including carbonized or interleaved with carbon or otherwise processed for multiple reproduction.

    248 U.S. business records

  66. 5812 Eating Places

    The retail sale of prepared food and drinks for on-premise or immediate consumption.

    537,229 U.S. business records

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Sources & methodology

NAICS definitions: U.S. Census Bureau, 2022

SIC definitions: OSHA SIC Manual

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