| 3331 | Crucibles | Company Product |
| 3332 | Crude Rubber | Company Product |
| 3333 | Cruise | Company Product |
| 3334 | Cruise Travel Agencies | Company Product |
| 3335 | Crushed Stones | Company Product |
| 3336 | Crushers | Company Product |
| 3337 | Crushing & Pulverizing Equipment | Company Product |
| 3338 | Crushing & Screening Plants | Company Product |
| 3339 | Cryogenic Equipment & Supplies | Company Product |
| 3340 | Cryogenic Tank | Company Product |
| 3341 | Cryogenic Treatment | Company Product |
| 3342 | Cryogenic Valves | Company Product |
| 3343 | Crystal | Company Product |
| 3344 | Crystal Filters | Company Product |
| 3345 | Crystal Giftwares | Company Product |
| 3346 | Crystal Impedance Meters | Company Product |
| 3347 | Crystal Level | Company Product |
| 3348 | Crystal Oscillators | Company Product |
| 3349 | Crystal Retailers | Company Product |
| 3350 | Crystallizer Tanks | Company Product |
| 3351 | Crystallizers | Company Product |
| 3352 | Crystalwares | Company Product |
| 3353 | Csl | Company Product |
| 3354 | Ct | Company Product |
| 3355 | Ct With Built-In Transducers | Company Product |
| 3356 | Ct Woods | Company Product |
| 3357 | Ctr Suspension Parts | Company Product |
| 3358 | Cube Moulds | Company Product |
| 3359 | Cubic Boron Nitride Tools | Company Product |
| 3360 | Cultery | Company Product |