| 661 | Weng Seng Printing Services 20060000A | 启用 |
| 662 | Weining Pte Ltd 199200768R | 启用 |
| 663 | Welmark Int'l Pte Ltd
| 启用 |
| 664 | Wavex Technologies Pte. Ltd. 200100532N | 启用 |
| 665 | Water & Wastewater Asia
| 启用 |
| 666 | Wah Teck Pte Ltd
| 启用 |
| 667 | Wah Luen Furniture (S) Pte Ltd
| 启用 |
| 668 | Woodsville Florist Pte Ltd 200009221K | 启用 |
| 669 | Wood Star Co Pte Ltd 199206090D | 启用 |
| 670 | World Toilet Organization Ltd
| 启用 |
| 671 | Witte Far East Pte Ltd 200102220H | 启用 |
| 672 | Wing Joo Loong Ginseng Hong
| 启用 |
| 673 | Window Image 53109133C | 启用 |
| 674 | Wicked Chocs 53048219C | 启用 |
| 675 | Westlink Marketing Services Pte. Ltd. 198101328N | 启用 |
| 676 | Westlab Pte Ltd 199701699E | 启用 |
| 677 | Westfalia Separator (S E A) Pte Ltd
| 启用 |
| 678 | Willy Int'l (S) Pte Ltd
| 启用 |
| 679 | Weikeng Technology Pte. Ltd. 200100558E | 启用 |
| 680 | Weidmuller Pte Ltd 198103714H | 启用 |
| 681 | Weetek Garment Co 30123200L | 启用 |
| 682 | Wei Min Clinic
| 启用 |
| 683 | Wells Music Publishers 52840201C | 启用 |
| 684 | Well Born Pte. Ltd. 197802175M | 启用 |
| 685 | Wang Chee Cheng Adrian
| 启用 |
| 686 | Wcp Engineering & Trading Pte. Ltd. 200305632W | 启用 |
| 687 | Wyse Exclusive (s) Pte Ltd 199703074K | 启用 |
| 688 | Wong Fook Yan Rubber Stamp Manufacturer 36312900J | 启用 |
| 689 | Wisco Pte Ltd 199203178K | 启用 |
| 690 | Washy Washy Laundry Pte Ltd 198803436W | 启用 |