| 4501 | Singapore Cables Manufacturers Pte. Ltd. 197501262N | 启用 |
| 4502 | Siong Kee Piling Construction (pte.) Ltd 196300212C | 启用 |
| 4503 | Smatra Engineering Pte Ltd 199004783E | 启用 |
| 4504 | Soon Poh Telecommunications Pte Ltd 198601557H | 启用 |
| 4505 | S H Teh Building Service Pte. Ltd. 198702870C | 启用 |
| 4506 | Sas Institute Pte Ltd 198303171M | 启用 |
| 4507 | Straits Teamwork Pte Ltd 197501956G | 启用 |
| 4508 | Sin Loong Seng Engineering Works (pte) Ltd 197501489E | 启用 |
| 4509 | Sunho Construction Private Limited 199001163D | 启用 |
| 4510 | Singapore Cement Manufacturing Company (private) Limited 196100051E | 启用 |
| 4511 | Sin Yuan Contract Manufacturing 52929923B | 启用 |
| 4512 | Shanghai Chong Kee Furniture & Construction Pte Ltd 198305163N | 启用 |
| 4513 | Starlight Building Maintenance Services (s) Pte Ltd 198600227K | 启用 |
| 4514 | Sin Hiap Hee Gas & General Trading Enterprise 37729200A | 启用 |
| 4515 | Sohome It Services 52945303K | 启用 |
| 4516 | Siren Colour Lab 52930984W | 启用 |
| 4517 | St Electronics (info Comm Systems) Pte. Ltd. 198601460K | 启用 |
| 4518 | Seng Yap Furniture & Construction Pte. Ltd. 198600155M | 启用 |
| 4519 | Samwoh Corporation Pte. Ltd. 198502202Z | 启用 |
| 4520 | Stills Network 52951322J | 启用 |
| 4521 | San Yang Constructor 32036500W | 启用 |
| 4522 | Sing Hua Construction And Trading 52930219E | 启用 |
| 4523 | Sing Lian Huat Sand Quarry Pte Ltd 199000234N | 启用 |
| 4524 | Sambo E&c Co. Ltd (singapore Branch) S96FC5252G | 启用 |
| 4525 | St Engineering Marine Ltd. 196800180M | 启用 |
| 4526 | Sri Balaji Investments Pte. Ltd. 200721126C | 启用 |
| 4527 | Summit Gas Systems Pte. Ltd. 196900506W | 启用 |
| 4528 | Sin Wan Seng Trading 52931611X | 启用 |
| 4529 | Standard Stainless Steel Private Limited 198303791E | 启用 |
| 4530 | Surface Image Llp T07LL1444A | 启用 |