| ABV TECHNOLOGY PTE LTD | Single Grade | 2028-05-01 |
| APS ASIA PDA ENTERPRISE PTE. LTD. | Single Grade | 2026-09-01 |
| ASSOCIATED GEOTECHNICAL SERVICES PTE LTD | Single Grade | 2028-05-01 |
| AWCS TECHNOLOGIES PTE. LTD. | Single Grade | 2028-10-01 |
| BETIME ENGINEERING PTE. LTD. | Single Grade | 2027-01-01 |
| CAMBRIAN ENGINEERING CORPORATION PTE LTD | Single Grade | 2027-02-01 |
| CAST LABORATORIES PTE LTD | Single Grade | 2026-08-01 |
| DONG-A CONSULTANTS ASIA PTE LTD | Single Grade | 2028-10-01 |
| DONGAH GEOLOGICAL ENGINEERING CO., LTD, SINGAPORE BRANCH | Single Grade | 2027-07-01 |
| ELEMENT CONSTRUCTION TESTING (S) PTE. LTD. | Single Grade | 2027-08-01 |
| ELEMENT GEOTECHNICAL TESTING (S) PTE. LTD. | Single Grade | 2028-01-01 |
| EUROFINS STATS ASIA PACIFIC PTE. LTD. | Single Grade | 2026-08-01 |
| FUGRO SINGAPORE LAND PTE. LTD. | Single Grade | 2026-11-01 |
| GAMMON PTE. LIMITED | Single Grade | 2026-07-01 |
| GBAD SERVICES PTE. LTD. | Single Grade | 2027-01-01 |
| GEOAPPLICATION ENGINEERS PTE. LTD. | Single Grade | 2028-11-01 |
| GEOMOTION (SINGAPORE) PTE. LTD. | Single Grade | 2027-02-01 |
| GEONAMICS (S) PTE LTD | Single Grade | 2027-11-01 |
| GEOREALTIME PTE. LTD. | Single Grade | 2028-04-01 |
| GEOSCAN PTE LTD | Single Grade | 2026-04-01 |
| GEOSMART INTERNATIONAL PTE. LTD. | Single Grade | 2027-01-01 |
| GEOSPECS PTE LTD | Single Grade | 2027-03-01 |
| GLOBAL SINOTRUST PTE. LTD. | Single Grade | 2029-02-01 |
| GROUND INSTRUMENTATION & ENGINEERING PTE. LTD. | Single Grade | 2028-01-01 |
| KELLER FOUNDATIONS (S E ASIA) PTE. LTD. | Single Grade | 2028-07-01 |
| KIMARO GEOTECHNICAL ENGINEERING PTE. LTD. | Single Grade | 2026-07-01 |
| KISO-JIBAN CONSULTANTS CO., LTD SINGAPORE BRANCH | Single Grade | 2026-11-01 |
| KWANG SING ENGINEERING PTE. LTD. | Single Grade | 2028-09-01 |
| MAXWELL GEOSYSTEMS PTE. LTD. | Single Grade | 2027-06-01 |
| MONITORING SOLUTION PROVIDERS PTE. LTD. | Single Grade | 2028-12-01 |
| RYOBI GEOTECHNIQUE INTERNATIONAL PTE. LTD. | Single Grade | 2026-10-01 |
| SAMSUNG C&T CORPORATION | Single Grade | 2026-07-01 |
| SENSINGTECH PTE. LTD. | Single Grade | 2027-10-01 |
| SGS TESTING & CONTROL SERVICES SINGAPORE PTE LTD | Single Grade | 2028-05-01 |
| SINGAPORE ENVIRONMENTAL CONSULTANCY AND SOLUTIONS PTE. LTD. | Single Grade | 2027-10-01 |
| SOIL INVESTIGATION PTE. LIMITED | Single Grade | 2026-07-01 |
| SYSENG (S) PTE. LTD. | Single Grade | 2028-07-01 |
| TAEHWA GEOLOGICAL ENGINEERING PTE. LTD. | Single Grade | 2028-04-01 |
| TESTCONSULT (SINGAPORE) PTE LIMITED | Single Grade | 2027-06-01 |
| TRITECH ENGINEERING & TESTING (SINGAPORE) PTE LTD | Single Grade | 2027-05-01 |
| ZHAO YANG GEOTECHNIC PTE LTD | Single Grade | 2027-03-01 |
| GLOSTREXT TECHNOLOGY (S) PTE. LTD. Not yet published | Single Grade | 2028-12-01 |
| KH INSTRUMENTATION PTE. LTD. Not yet published | Single Grade | 2028-06-01 |
| PACIFIC GEOSCIENCE (S) PTE. LTD. Not yet published | Single Grade | 2026-12-01 |
| PILESCAN GEOTECHNICAL SERVICES PTE. LTD. Not yet published | Single Grade | 2027-06-01 |
| SETSCO CONSULTANCY INTERNATIONAL PTE. LTD. Not yet published | Single Grade | 2028-05-01 |