- 3648 - Lighting Equipment (43 Companies)
- 3651 - Household Audio And Video Equipment (5 Companies)
- 3652 - Prerecorded Records And Tapes (4 Companies)
- 3661 - Telephone And Telegraph Apparatus (8 Companies)
- 3663 - Radio And Tv Communications Equipment (47 Companies)
- 3669 - Communications Equipment (4 Companies)
- 3674 - Semiconductors And Related Devices (1 Company)
- 3679 - Electronic Components (2 Companies)
- 3691 - Storage Batteries (1 Company)
- 3692 - Primary Batteries, Dry And Wet (3 Companies)
- 3695 - Magnetic And Optical Recording Media (3 Companies)
- 3699 - Electrical Equipment And Supplies (29 Companies)
- 3711 - Motor Vehicles And Car Bodies (6 Companies)
- 3714 - Motor Vehicle Parts And Accessories (6 Companies)
- 3721 - Aircraft (3 Companies)
- 3731 - Shipbuilding And Repairing (2 Companies)
- 3751 - Motorcycles, Bicycles And Parts (1 Company)
- 3761 - Guided Missiles And Space Vehicles (5 Companies)
- 3769 - Space Vehicle Equipment (2 Companies)
- 3792 - Travel Trailers And Campers (3 Companies)
- 3799 - Transportation Equipment (34 Companies)
- 3822 - Environmental Controls (1 Company)
- 3823 - Process Control Instruments (5 Companies)
- 3829 - Measuring And Controlling Devices, Nec (2 Companies)
- 3842 - Orthopedic , Prosthetic And Surgical Appliances An (28 Companies)
- 3851 - Ophthalmic Goods (6 Companies)
- 3861 - Photographic Equipment And Supplies (3 Companies)
- 3873 - Watches, Clocks, Watchcases And Parts (3 Companies)
- 3911 - Jewelry, Precious Metal (266 Companies)
- 3914 - Silverware And Plated Ware (6 Companies)
- 3915 - Jewelers Materials And Lapidary Work (1 Company)
- 3931 - Musical Instruments (7 Companies)
- 3944 - Games, Toys And Childrens Vehicles (20 Companies)
- 3949 - Sporting And Athletic Goods (39 Companies)
- 3951 - Pens And Mechanical Pencils (2 Companies)
- 3993 - Signs And Advertising Specialties (99 Companies)
- 3999 - Manufacturing Industries (99 Companies)
- 4011 - Railroads, Line Haul Operating (9 Companies)
- 4111 - Local & Suburban Transit (48 Companies)
- 4119 - Local Passenger Transportation (366 Companies)
- 4121 - Taxicabs (54 Companies)
- 4131 - Intercity & Rural Bus Transportation (34 Companies)
- 4141 - Local Bus Charter Service (28 Companies)
- 4142 - Bus Charter Service, Except Local (28 Companies)
- 4212 - Local Trucking, Without Storage (409 Companies)
- 4213 - Trucking, Except Local (256 Companies)
- 4214 - Local Trucking With Storage (63 Companies)
- 4215 - Courier Services, Except By Air (179 Companies)
- 4225 - General Warehousing And Storage (148 Companies)
- 4226 - Special Warehousing And Storage (118 Companies)
- 4311 - U S Postal Service (1081 Companies)
- 4449 - Water Transportation Of Freight (1 Company)
- 4481 - Deep Sea Passenger Transportation, Except Ferry (43 Companies)
- 4482 - Ferries (1 Company)
- 4489 - Water Passenger Transportation (3 Companies)
- 4491 - Marine Cargo Handling (2 Companies)
- 4492 - Towing & Tugboat Services (27 Companies)
- 4493 - Marinas (4 Companies)
- 4499 - Water Transportation Services (27 Companies)
- 4512 - Air Transportation, Scheduled (131 Companies)
- 4513 - Air Courier Services (34 Companies)
- 4522 - Air Transportation, Nonscheduled (32 Companies)
- 4581 - Airports, Flying Fields & Services (24 Companies)
- 4724 - Travel Agencies (1320 Companies)
- 4725 - Tour Operators (369 Companies)
- 4729 - Passenger Transportation Services (48 Companies)
- 4731 - Freight Transportation Arrangement (620 Companies)
- 4783 - Packing And Crating Services (25 Companies)
- 4785 - Inspection And Weighing Facilities And Services (1 Company)
- 4789 - Transportation Services (2 Companies)
- 4812 - Radiotelephone Communications (605 Companies)
- 4813 - Telephone Communication Except Radio (1413 Companies)
- 4822 - Telegraph And Other Message Communications (11 Companies)
- 4832 - Radio Broadcasting Stations (315 Companies)
- 4833 - Television Broadcasting Stations (233 Companies)
- 4841 - Cable And Other Pay Television Services (347 Companies)
- 4899 - Communication Services, Nec (58 Companies)
- 4911 - Electric Services (140 Companies)
- 4923 - Natural Gas Transmission And Distribution (3 Companies)
- 4924 - Natural Gas Distribution (3 Companies)
- 4925 - Gas Production And/Or Distribution (68 Companies)
- 4931 - Electric And Other Services Combined (1 Company)
- 4939 - Combination Utilities (5 Companies)
- 4941 - Water Supply Systems (58 Companies)
- 4953 - Refuse Systems (103 Companies)
- 4959 - Sanitary Services (13 Companies)
- 4971 - Irrigation Systems (2 Companies)
- 5012 - Automobiles And Other Motor Vehicles (6 Companies)
- 5013 - Motor Vehicle Supplies And New Parts (50 Companies)
- 5014 - Tires And Tubes (1 Company)
- 5015 - Motor Vehicle Parts, Used (149 Companies)
- 5021 - Furniture (19 Companies)
- 5023 - Homefurnishings (157 Companies)
- 5031 - Lumber, Plywood, Millwork & Wood Panels (34 Companies)
- 5032 - Brick, Stone And Related Material (80 Companies)
- 5039 - Construction Materials (13 Companies)
- 5043 - Photographic Equipment And Supplies (73 Companies)
- 5044 - Office Equipment (116 Companies)
- 5045 - Computers, Peripherals And Software (71 Companies)
- 5046 - Commercial Equipment (61 Companies)
