| 511 | Uvw Building Services Pte. Ltd. 200815958H | 启用 |
| 512 | United Integrated Engineering Pte. Ltd. 200416949H | 启用 |
| 513 | Ufer Pte. Ltd. 200500989G | 启用 |
| 514 | Uhp Technology Pte. Ltd. 200104308W | 启用 |
| 515 | U Home Interior Design Pte. Ltd. 200207072K | 启用 |
| 516 | Unique Stainless Steel & Construction Pte Ltd 200101255E | 启用 |
| 517 | Uncle Ringo Trading Pte. Ltd. 200201884D | 启用 |
| 518 | United Engineering Private Limited 200612201K | 启用 |
| 519 | Unitech Pte. Ltd. 200309209D | 启用 |
| 520 | Uniquesteels Engineering Construction Pte. Ltd. 200210842M | 启用 |
| 521 | Unimax Creative Pte. Ltd. 200202117C | 启用 |
| 522 | Uni Roof (s) Pte Ltd 199704876E | 启用 |
| 523 | Unicorn Signcrafts Pte. Ltd. 200313156Z | 启用 |
| 524 | Union Contractors (singapore) Pte Ltd 200009371H | 启用 |
| 525 | U & U Construction Pte Ltd 199903151N | 启用 |
| 526 | Uni Alliance Trading & Construction Pte Ltd 199904252R | 启用 |
| 527 | Unifor Construction Pte Ltd 199704840C | 启用 |
| 528 | Utracon Overseas Pte. Ltd. 200105453W | 启用 |
| 529 | United Controls Asia Pte Ltd 199606804D | 启用 |
| 530 | Uni Global Enterprises Pte Ltd 199701187W | 启用 |
| 531 | United Central Engineering Pte Ltd 199501651Z | 启用 |
| 532 | U Friend Interior Decoration Contractor 52943473C | 启用 |
| 533 | U P Shoes (import & Export) Traders 52946824K | 启用 |
| 534 | U Home Furniture 52946297D | 启用 |
| 535 | United Ace Computers 52930639E | 启用 |
| 536 | Ubt Construction Private Limited 198004151M | 启用 |
| 537 | Unique Environmental Services Pte Ltd 199502911H | 启用 |
| 538 | Uniglory Construction Pte Ltd 199800856W | 启用 |
| 539 | Ut Singapore Services Pte. Ltd. 201536544C | 启用 |
| 540 | Ues Holdings Pte. Ltd. 196600065Z | 启用 |