| 541 | Dew Point Transmitters | Company Product |
| 542 | Double Stage Water Purifiers | Company Product |
| 543 | Double Column Cutting Machines | Company Product |
| 544 | Diesel Compactors | Company Product |
| 545 | Duct Hose | Company Product |
| 546 | Disc | Company Product |
| 547 | Dry Abrasive Papers | Company Product |
| 548 | Dual Action Sander | Company Product |
| 549 | Display Unit Repair Services | Company Product |
| 550 | Display Unit Repairs | Company Product |
| 551 | Denex Micro Repair Services | Company Product |
| 552 | Denex Micro Repairs | Company Product |
| 553 | Dc Drive Repair Services | Company Product |
| 554 | Dc Drive Repairs | Company Product |
| 555 | Drive Repair Services | Company Product |
| 556 | Drive Services | Company Product |
| 557 | Drives Card Repair Services | Company Product |
| 558 | Diamond Coring Machine | Company Product |
| 559 | Dust Filter & Chemical Cartridge | Company Product |
| 560 | Dust Filter Mask | Company Product |
| 561 | Dwarf Coconut | Company Product |
| 562 | Disposal Services | Company Product |
| 563 | Diamond Cut Coconut | Company Product |
| 564 | D & D | Company Product |
| 565 | Dckhhofbofhmbkdsy | Company Product |
| 566 | Dome Grating & Vent Cowl | Company Product |
| 567 | DSM Method | Company Product |
| 568 | Deep Mixing Method | Company Product |
| 569 | Deep Soil Mixing | Company Product |
| 570 | Deep Foundations | Company Product |