| 3481 | Service Station Equipment & Supplies | Company Product |
| 3482 | Sequestering Agents | Company Product |
| 3483 | Switching Sensors | Company Product |
| 3484 | Separators | Company Product |
| 3485 | Speed Sensors | Company Product |
| 3486 | Sensors | Company Product |
| 3487 | Sensors: Ball Float | Company Product |
| 3488 | Semiconductors | Company Product |
| 3489 | Seminar Organisers | Company Product |
| 3490 | Seminar Folders | Company Product |
| 3491 | Senior Citizens' Service Organizations | Company Product |
| 3492 | Semiconductor Materials | Company Product |
| 3493 | Semiconductor Burn-in Systems | Company Product |
| 3494 | Semiconductor Burn-in Services | Company Product |
| 3495 | Self Lubricating Bearings | Company Product |
| 3496 | Self Clinching Fans | Company Product |
| 3497 | Self Inking Stamps | Company Product |
| 3498 | Selenium Compounds | Company Product |
| 3499 | Selenium | Company Product |
| 3500 | Selector Switches | Company Product |
| 3501 | Security Video Phones | Company Product |
| 3502 | Seismic Data Acquisition | Company Product |
| 3503 | Seeds & Bulbs | Company Product |
| 3504 | Security Guards | Company Product |
| 3505 | Securities Brokers | Company Product |
| 3506 | Seats | Company Product |
| 3507 | Secretarial Services | Company Product |
| 3508 | Season Greeting Cards | Company Product |
| 3509 | Security Seals | Company Product |
| 3510 | Strapping Seals | Company Product |