| 1531 | Bobbins | Company Product |
| 1532 | Boat Repair | Company Product |
| 1533 | Boat Equipment & Supplies | Company Product |
| 1534 | Boat Cranes | Company Product |
| 1535 | Boat Cleaning | Company Product |
| 1536 | Boat Dealers | Company Product |
| 1537 | Boat Covers, Tops & Upholstery | Company Product |
| 1538 | Boat Builders | Company Product |
| 1539 | Boat Chartering, Rental & Leasing | Company Product |
| 1540 | Blowers | Company Product |
| 1541 | Blowout Preventers | Company Product |
| 1542 | Blueprinting | Company Product |
| 1543 | Blueprinting Equipment & Supplies | Company Product |
| 1544 | Blow Guns | Company Product |
| 1545 | Blood Cell Counters | Company Product |
| 1546 | Block Hooks | Company Product |
| 1547 | Block Glass | Company Product |
| 1548 | Blister Packaging Machines | Company Product |
| 1549 | Blister Packaging | Company Product |
| 1550 | Blasting Grits | Company Product |
| 1551 | Blending Machines | Company Product |
| 1552 | Bleaching Agents | Company Product |
| 1553 | Bleaching Compounds Retailers | Company Product |
| 1554 | Blasting Abrasives, Grits, Shot | Company Product |
| 1555 | Blasting Cabinets | Company Product |
| 1556 | Blanking & Piercing Presses | Company Product |
| 1557 | Black Oxide Electroplating | Company Product |
| 1558 | Bitumen | Company Product |
| 1559 | Blankets | Company Product |
| 1560 | Blackening Agents | Company Product |