| 2521 | Chuan Lim Construction Pte Ltd 199600684W | 有効 |
| 2522 | Christensen Irrigation (singapore) Pte Ltd 199102754H | 有効 |
| 2523 | China International Water & Electric Corporation (s) Pte Ltd 199101762D | 有効 |
| 2524 | Cementone (s) Pte Ltd 198803193W | 有効 |
| 2525 | Cape East Private Limited 199002200E | 有効 |
| 2526 | Citystar Construction Pte Ltd 199707727G | 有効 |
| 2527 | Citimac Renovation Pte Ltd 199406222M | 有効 |
| 2528 | Cams Design Pte Ltd 199002928Z | 有効 |
| 2529 | Cal Lighting Pte Ltd 199503303G | 有効 |
| 2530 | Commercial Industrial Supplies & Services (pte.) Ltd. 197201562G | 有効 |
| 2531 | Choy Meng Fatt Construction Pte Ltd 198802977R | 有効 |
| 2532 | Comnet Systems Pte Ltd 199003389R | 有効 |
| 2533 | Colwell Construction & Engineering Pte Ltd 199002355W | 有効 |
| 2534 | Crx Engineering Private Limited 200203695K | 有効 |
| 2535 | Cep Services Pte. Ltd. 200200260K | 有効 |
| 2536 | City Development Construction Pte. Ltd. 200106924Z | 有効 |
| 2537 | Ch2m Hill Singapore Private Limited 199601111Z | 有効 |
| 2538 | Creative Polymer Industries Pte Ltd 199400962G | 有効 |
| 2539 | Chew Plumbing Construction 53093333X | 有効 |
| 2540 | Cityneon Creations Pte Ltd 199903947D | 有効 |
| 2541 | Csl Building Services Engineering Pte Ltd 199302792E | 有効 |
| 2542 | Chop T & P General Contractor Pte. Ltd. 200203641D | 有効 |
| 2543 | Cheng Seng Electric Co. Pte Ltd 198802500M | 有効 |
| 2544 | Chan Ah Kuan Engineering Works 03039100L | 有効 |
| 2545 | Csme Power Systems Pte Ltd 199400267Z | 有効 |
| 2546 | Csp Maintenance Pte Ltd 199400236K | 有効 |
| 2547 | Chu Yun Construction 53176926K | 有効 |
| 2548 | Crane (asia Pacific) Pte. Ltd. 199508465C | 有効 |
| 2549 | Chemco Industries (S) Pte Ltd
| 有効 |
| 2550 | Chin Seng Engineering Services 53061859A | 有効 |