| 7129 | Industrial machinery and equipment, rental and leasing | |
| 5110 | Industrial machinery and equipment, wholesale agents and brokers | |
| 7129 | Industrial machinery rental and leasing | |
| 5150 | Industrial machinery, equipment and supplies, wholesale | |
| 3150 | Industrial mercury lighting fixtures, manufacturing | |
| 5150 | Industrial motor controls, wholesale | |
| 2929 | Industrial moulds (except steel ingots), manufacturing | |
| 7010 | Industrial park developing and operating | |
| 2929 | Industrial patterns, manufacturing | |
| 7491 | Industrial personnel services (personnel suppliers) | |
| 4520 | Industrial plant appurtenance construction, general contractors | |
| 4520 | Industrial plant construction, general contractors | |
| 3313 | Industrial process control instruments, manufacturing | |
| 4530 | Industrial process piping, installation | |
| 2422 | Industrial product finishes and coatings (i.e., paint), manufacturing | |
| 4530 | Industrial refrigeration systems, installation | |
| 7513 | Industrial relations services, federal government | |
| 7513 | Industrial relations services, provincial government | |
| 7310 | Industrial research and development laboratories (except testing) | |
| 5139 | Industrial safety devices (e.g., first-aid kits, face and eye masks), wholesale | |
| 8090 | Industrial safety training | |
| 2429 | Industrial salt, manufacturing | |
| 5149 | Industrial salts, wholesale | |
| 1410 | Industrial sand mining | |
| 2919 | Industrial scales, manufacturing | |
| 8090 | Industrial school, government (except corrective or reform school) | |
| 7523 | Industrial school, provincial government (reform school) | |
| 5150 | Industrial sewing thread, wholesale | |
| 7422 | Industrial testing laboratories | |
| 7421 | Industrial tool design services | |
| 2915 | Industrial truck cranes, manufacturing | |
| 7129 | Industrial truck rental and leasing | |
| 2915 | Industrial truck repair | |
| 2915 | Industrial trucks and tractors, manufacturing | |
| 9301 | Industrial uniform supply service | |
| 5150 | Industrial wheels, wholesale | |
| 1810 | Industrial work clothing, washable, men' s and boys', cutting and sewing purchased fabric | |
| 5131 | Industrial yarn, wholesale | |
| 1511 | Inedible products (e.g., hides, skins, pulled wool, wool grease), produced in slaughtering plants | |
| 3312 | Inertial navigation systems, aeronautical, manufacturing | |