| 481 | Marble Polishing | Company Product |
| 482 | Marble Repairs | Company Product |
| 483 | Marble & Stone Cleaning Supplies | Company Product |
| 484 | Marble Tiles | Company Product |
| 485 | Marclan International | Company Product |
| 486 | Margarine | Company Product |
| 487 | Marine Adapters | Company Product |
| 488 | Marine Air Compressors | Company Product |
| 489 | Marine Air-Conditioning | Company Product |
| 490 | Marine Aircon Compressor Repair | Company Product |
| 491 | Marine Aircon Compressor Spare Parts | Company Product |
| 492 | Marine Aircon Contractors | Company Product |
| 493 | Marine Aircon Equipment | Company Product |
| 494 | Marine Alignment | Company Product |
| 495 | Marine Alternators | Company Product |
| 496 | Marine Aneroid Barometers | Company Product |
| 497 | Marine Antennas | Company Product |
| 498 | Marine Applications | Company Product |
| 499 | Marine Autopilots | Company Product |
| 500 | Marine Balancing | Company Product |
| 501 | Marine Batteries | Company Product |
| 502 | Marine Battery Chargers | Company Product |
| 503 | Marine Beacons | Company Product |
| 504 | Marine Bearings | Company Product |
| 505 | Marine Blinds | Company Product |
| 506 | Marine Boiler Safety Valves Servicing | Company Product |
| 507 | Marine Boilers | Company Product |
| 508 | Marine Box Cooler | Company Product |
| 509 | Marine Bunkering | Company Product |
| 510 | Marine Buoys | Company Product |