| 3391 | Crown Segment | Company Product |
| 3392 | Crown Staples | Company Product |
| 3393 | Crown Wheel Pinion | Company Product |
| 3394 | Crown Wheel Pinions | Company Product |
| 3395 | Crt Terminal, Computer Monitor Screen Glare Filters | Company Product |
| 3396 | Crucibles | Company Product |
| 3397 | Crude Rubber | Company Product |
| 3398 | Cruise | Company Product |
| 3399 | Cruise Travel Agencies | Company Product |
| 3400 | Crushed Stones | Company Product |
| 3401 | Crushers | Company Product |
| 3402 | Crushing & Pulverizing Equipment | Company Product |
| 3403 | Crushing & Screening Plants | Company Product |
| 3404 | Cryogenic Equipment & Supplies | Company Product |
| 3405 | Cryogenic Tank | Company Product |
| 3406 | Cryogenic Treatment | Company Product |
| 3407 | Cryogenic Valves | Company Product |
| 3408 | Crypto | Company Product |
| 3409 | Crystal | Company Product |
| 3410 | Crystal Filters | Company Product |
| 3411 | Crystal Giftwares | Company Product |
| 3412 | Crystal Impedance Meters | Company Product |
| 3413 | Crystal Level | Company Product |
| 3414 | Crystal Oscillators | Company Product |
| 3415 | Crystal Retailers | Company Product |
| 3416 | Crystallizer Tanks | Company Product |
| 3417 | Crystallizers | Company Product |
| 3418 | Crystalwares | Company Product |
| 3419 | Csl | Company Product |
| 3420 | Ct | Company Product |