| 3331 | Crossed Razor Barbed Wires | Company Product |
| 3332 | Crosshole Sonic Logging | Company Product |
| 3333 | Crosshole Tomography | Company Product |
| 3334 | Crossover Adapters | Company Product |
| 3335 | Crowbar | Company Product |
| 3336 | Crown Corks | Company Product |
| 3337 | Crown Moulding Cornices Corners | Company Product |
| 3338 | Crown Plaster Crown Mouldings | Company Product |
| 3339 | Crown Segment | Company Product |
| 3340 | Crown Staples | Company Product |
| 3341 | Crown Wheel Pinion | Company Product |
| 3342 | Crown Wheel Pinions | Company Product |
| 3343 | Crt Terminal, Computer Monitor Screen Glare Filters | Company Product |
| 3344 | Crucibles | Company Product |
| 3345 | Crude Rubber | Company Product |
| 3346 | Cruise | Company Product |
| 3347 | Cruise Travel Agencies | Company Product |
| 3348 | Crushed Stones | Company Product |
| 3349 | Crushers | Company Product |
| 3350 | Crushing & Pulverizing Equipment | Company Product |
| 3351 | Crushing & Screening Plants | Company Product |
| 3352 | Cryogenic Equipment & Supplies | Company Product |
| 3353 | Cryogenic Tank | Company Product |
| 3354 | Cryogenic Treatment | Company Product |
| 3355 | Cryogenic Valves | Company Product |
| 3356 | Crypto | Company Product |
| 3357 | Crystal | Company Product |
| 3358 | Crystal Filters | Company Product |
| 3359 | Crystal Giftwares | Company Product |
| 3360 | Crystal Impedance Meters | Company Product |