| 391 | Nylon Packings | Company Product |
| 392 | Nuts | Company Product |
| 393 | Nursing Homes | Company Product |
| 394 | Nutrition Consultants | Company Product |
| 395 | Nursing Agencies | Company Product |
| 396 | Nvocc | Company Product |
| 397 | Nurses | Company Product |
| 398 | Nurse Call Systems | Company Product |
| 399 | Nuclear Magnetic Resonance Shielding | Company Product |
| 400 | Nozzles | Company Product |
| 401 | Notebook Computers | Company Product |
| 402 | Notary Public | Company Product |
| 403 | Noticeboards | Company Product |
| 404 | Notching Machines | Company Product |
| 405 | Noodle Restaurants | Company Product |
| 406 | Nonyl Phenol | Company Product |
| 407 | Noodle Manufacturing Machines | Company Product |
| 408 | Noodles | Company Product |
| 409 | Non Ferrous Products | Company Product |
| 410 | Non Ferrous Metal | Company Product |
| 411 | Noise Measuring Instruments | Company Product |
| 412 | Noise Control Structures & Equipment | Company Product |
| 413 | Nitrous Oxide | Company Product |
| 414 | Nitrogen Gas Distributors | Company Product |
| 415 | Nite Clubs | Company Product |
| 416 | Nitrocellulose | Company Product |
| 417 | Nitric Acid | Company Product |
| 418 | Nitrobenzene | Company Product |
| 419 | Nitrogen Gas Manufacturers | Company Product |
| 420 | Nipples Hoses | Company Product |