| 511 | Zeuslab Limited T04UF0016D | 有効 |
| 512 | Zhuan Ye Interior 53117195K | 有効 |
| 513 | Zhong Hua Mini Mart 53224973M | 有効 |
| 514 | Zi Zai Vegetarian 53120067A | 有効 |
| 515 | Zen Blue Trading 53147279E | 有効 |
| 516 | Zenith Maxwell Holdings Pte. Ltd. 201421883C | 有効 |
| 517 | Zuken Incorporated S92UF0068A | 有効 |
| 518 | Zaddeus Investment Holding Inc T07UF3732K | 有効 |
| 519 | Zuyu Lin Reflexology & Health Centre 53142943A | 有効 |
| 520 | Zhen Building Services 53140151X | 有効 |
| 521 | Zeemart Pte. Ltd. 201525600G | 有効 |
| 522 | Zada Stationery & Accessories Pte. Ltd. 201009119R | 有効 |
| 523 | Zandor Mining N.l. S87UF0173F | 有効 |
| 524 | Zhong Hua Yi Geomancy Astrology Centre 53091066K | 有効 |
| 525 | Zeusstrainingsystem 53144261J | 有効 |
| 526 | Zenith Trade Group 53090809C | 有効 |
| 527 | Za Architects 53188389B | 有効 |
| 528 | Zename Graphics 53109191X | 有効 |
| 529 | Zahnradfabrik Friedrichshafen Aktiengesellschaft S82UF0402L | 有効 |
| 530 | Zoie Publishing 53097571L | 有効 |
| 531 | Zhen He Jia Huan Hand Made Noodle 53098112B | 有効 |
| 532 | Zealous 53098401J | 有効 |
| 533 | Zhong Kang Tcm Physician Medicare Services 53097658K | 有効 |
| 534 | Zhong Xin Cafe 53126251X | 有効 |
| 535 | Zj Engineering Services 53296166L | 有効 |
| 536 | Zhong Jie International Limited S94UF0755K | 有効 |
| 537 | Zydia Creations 53122257L | 有効 |
| 538 | Zhenhai Refining & Chemical Company Limited S87UF0262G | 有効 |
| 539 | Zolo Technologies Inc T01UF0082G | 有効 |
| 540 | Zayucel Ltd T08UF0129H | 有効 |